signs of a bad lcd panel quotation

However, if the digitizer or LCD is also damaged during a fall, that screen no longer carries value because it cannot be refurbished. Repair shops cannot sell broken LCDs to refurbishing companies; therefore, they cannot offset the cost of an LCD repair. That is why repair stores often charge a little extra if there is damage to the LCD or digitizer, to make up for that loss. Repair stores that don’t have an additional charge for an LCD repair typically inflate their glass repair price to make up for the loss from damaged LCDs. If they have one price, that means everyone is paying more to cover the cost of customers who have damaged LCDs and customers who only have cracked glass. This is why TCR separates the price of glass and LCD repairs for you! If you only have cracked glass, you only have to worry about paying to replace the cracked glass.

If your phone or tablet’s glass is shattered there will be cracks or chips on the screen itself. If it is just the glass that is damaged, the device may still function and you may be able to use it normally. If this is the case, it is likely that only the glass needs to be replaced. To prevent further damage to your device it is best to get it repaired quickly. For example, if liquids seep through the cracks it could cause permanent damage to the LCD.

Many people may continue to use their touchscreen with shattered glass and delay fixing the glass on their devices; however, if the touchscreen isn’t responsive, it could be a sign of more significant damage to the device’s digitizer which is integrated with the LCD screen.

A pixelated screen can indicate LCD damage. This would look like a patch of multicolored dots, a line or lines of discoloration, or a screen with rainbow colors. For many people, these colors are an easy way to know that their LCD is broken and that they should get it repaired.

Dropping your phone isn’t the only reason you’ll end up with a pixelated screen. Over time, your screen’s LCD may break down through regular use. This happens to other devices aside from your smartphone or tablet. Pixelation can happen to TVs and computers, too. People typically decide to buy a new device when this happens. Fortunately, with an LCD repair, you can fix the device without needing to replace it.

A black screen or black spots on your smartphone or tablet is an indication of a damaged LCD. Often with a bad LCD, a phone may still turn on and make noises, but there is no clear picture. This does not necessarily mean any other part of the phone is damaged and a simple screen replacement will get it functioning again. Sometimes it can mean a battery or other internal component is damaged. It is best to have a highly qualified phone repair technician diagnose what is wrong so the appropriate repair can be made.

Fortunately, your mobile device is fixable whether you cracked the glass or damaged the LCD. Stop by or call TCR: Triangle Cellular Repair at (919) 263-2699 for a free diagnostic and quick, affordable cell phone repair in Chapel Hill and surrounding areas. We’re always happy to help!

This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.

As often as you use your smartphone, it’s almost inevitable that you’ll eventually drop it. You may be extremely careful, but it only takes one fumble for your phone to tumble. While iPhone screens are designed to withstand impact, you might still end up with a shattered screen.

The good news: a broken screen doesn’t mean your phone is kaput. In fact, if only the glass is broken, the fix is quick and inexpensive. The bad news: if the LCD screen is broken, you’re looking at a pricier repair.

If you’ve looked into replacement parts, you’ve likely come across two very different options: a glass screen, and an LCD screen. While the first option is cheap, the second is definitely not. Here’s the difference:

1. The glass screen is the exterior layer on your phone’s display. While it is specially engineered for durability, it’s still just glass (between layers of plastic film), which is why it’s not very pricey to replace.

Most of the time, the damage to your screen will be pretty obvious. You’ll see the spider web patterns of shattered glass across the front of your iPhone. Occasionally, however, the glass screen will be intact, and you might not realize the damage until you try to use it. Whether the damage is visible or not, it’s a good idea to run a quick diagnostic to determine the extent of it.

If you encounter any of these problems, you’re dealing with a broken LCD screen. If the glass is shattered, but the display is clear and touch capability is working, that’s a good sign. The problem is probably just the glass screen.

Whether you’re dealing with cracked glass or a broken LCD screen, you can find a quick, reliable repair service at FastPhoneRepair.com. Our qualified technicians will get your iPhone repaired and up and running again in record time and at reasonable rates.

Vin: PWB input voltage (12V)VDD: ASIC, source IC, gate IC driving power (3.3v)VGH: TFT component switching voltage (~30V)VGL: TFT component turn-off voltage (~ -6v)VAA: step control voltage (~17V)VCOM: liquid crystal reversal reference voltage (~7V)

3. #If all the above is OK, measure the LVDS voltage value. Under normal conditions, the LVDS signal’s RX+/ RX-voltage value is about 1.2v, and RX+/ RX-difference value is about 200mV. At the same time, the resistance of the LVDS signal to ground and the resistance between the LVDS signal pairs can be measured (100 ohms). If there is an exception to these values, try replacing the ASIC.

1. #Confirm whether the COF on side X is hot compared with the normal temperature, whether there is fracture or wear crack, and whether the COF is burnt.

2. #Confirm whether the VAA is normal (normally about 17V). If abnormal, disconnect the RP32 to confirm whether it is caused by DC/DC loop or X-side COF: disconnect RP32, if the VAA is normal, the COF is bad, CO must be changed; COF can be Disconnect one by one to determine which NG disconnects RP32, VAA NG, try to change UP1; at the same time, confirm whether the continuity of the surrounding triode is OK.

4. #Determine whether the gate IC is OK. There is a signal test point on the back of COG-IC, and the green paint can be scraped for measurement confirmation; If there is a gate IC problem, which IC fault can be confirmed. The confirmation of gate IC fault is only for analysis when you are interested, and this method is not recommended.

1. #Measure GM1~GM14, the values are arranged from large to small. In general, a certain gamma value will be abnormal in the case of NG, then try to replace gamma-IC;

3. #Confirm whether the RSDS value is correct, normal RSDS is about 1.2v, and the signal difference is about 200mV; At the same time, we can confirm the resistance between RSDS signal (normal 100 or 50 ohms) and RSDS resistance to ground. If the voltage is NG, check if the ASIC and X-COF are hot.

Polarizer / CELL damaged To change the polarizer, a polarizer attaching machine is required The degree of whitening of the picture changes with different viewing angles

1. #Adjust the VR knob to see whether it can be adjusted and whether the screen performance changes. At the same time, confirm the VCOM value (about 7v), if NG, replace the VR knob.

2. #Confirm VGH/VGL voltage (about 30V VGH and -6v VGL), and confirm whether it is DC/DC loop NG or COF IC NG; The corresponding resistance of disconnected VGH and VGL can determine whether it is a DC/DC problem or a COF-IC problem. If it is DC/DC NG, try to replace UP1 or confirm whether the corresponding transistor is OK.

3. #If the whiteness changes significantly with the view Angle, and above 1&2 analysis is all OK, polarizer NG or CELL NG can be basically determined.

3. #Confirm whether the gate IC is OK. There is a signal test point on the back of COG IC, which can scrape the green paint for measurement confirmation; Or cut COF halfway from G3. If there is a gate-ic problem, which IC fault can be confirmed.

2. #Confirm whether there is 12V input, if not, confirm whether the connector is OK, and confirm the resistance value of 12V voltage to earth; If conn. NG, change conn.; If 12V is short-circuited to the ground, disconnect FP1 to determine the short-circuiting circuit.

3. #Confirm whether FP1 is open; if open, replaces fuse. If the 12V accessory of this model has a reverse diode, confirm the continuity of the diode and check whether it is burnt.

B. Confirm VAA resistance to ground at VAA test point of R plate (A short circuit usually occurs), disconnect the corresponding capacitance of the following 3 COF, and confirm VAA resistance to the ground again. If OK, replace the capacitor, if NG, replace COF. If VAA is still NG, confirm DC/DC loop as all models.

6. #Disconnect RP32 to confirm VAA, if NG, try to change the PWM IC (in general, it will be good), if still NG, try to change the gamma-ic or corresponding to the VAA several large capacitances (in general, it is rare, this situation is generally accompanied by VAA to the ground short circuit).

3. #Shaking module, if vertical lines disappear or reappear, then it can be judged that the possible cause is COF pin broken, and the crease should be found under the OM microscope.

4. #Press the LCD glass side of the panel, if the vertical lines disappear or reappear, it can be judged that the cause of poor contact, OM checking should be able to find the poor contact.

5. #If there is no display change in pressing, confirm whether ITO is damaged under the OM microscope, or pin signal waveform corresponding to needle COF.

Lamp line is broken Replace the lamp tubing Depending on the backlight structure, there will be different results. The failure of the performance may be a point-off, or it may be a backlight with a dark band.

4. #The above disassembly judgment can basically solve the problems of point-off in the market. If you can’t tell the truth, you can directly change the lamp tube.

Lamp line is broken Reconnect / replace lamp tubing Depending on the protection status of the power board, it may be a backlight with a dark band or it may be a point-off.

3. #Disassemble the backlight, confirm whether there is a short circuit with broken skin on the lamp strip, whether the plug of the lamp strip is fully integrated with the socket, whether the pin is aslant/off, whether the connector is off, and whether the LED bead is black and injured.

4. #The fault of the product is basically caused by the above reasons. If the appearance is fault-free, the lamp bar can be crossed to confirm whether the phenomenon follows the lamp bar, or the voltage of the lamp bar and the conduction condition between the lamp beads can be measured.

The above is the full text of LCD screen failure repair guide, we hope it is helpful to you. If you need to buy LCD and find a reliable LCD supplier, we suggest you to read our other great blog – How to find a reliable LCD supplier.

Founded in 2014, VISLCD is a professional LCD supplier. We provide LCD modules, touch LCD and customized LCD in various sizes with stable quality and competitive price. Welcome to contact us for any LCD demand, thank you.

This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.

Did you drop your phone on the floor? Or did it fall into the water? And now, you observe that the damage is not on the glass touchscreen. Instead, you likely have phone LCD problems. Usually, only the glass screen gets broken, but a significant fall can cause phone LCD problems. If you observe lines, black spots, screen flicker, or discolored areas on your screen, the LCD is damaged. If the screen entirely doesn’t light up, you have Phone LCD problems. Book a phone repair reservation at Carlcare as soon as possible to have your damaged LCD fixed.

You can visit the Carlcare website or app to book an appointment for a repair. Carlcare service centers handle LCD screen replacement not only for Infinix, TECNO, and itel phones. A typical question that most people ask is, how I can repair my LCD screen? The answer is – You cannot fix the LCD. Once the LCD is damaged, you have to replace it with a new one. Replacing the LCD is more technical than merely changing the glass.

The best person to handle the LCD screen repair is a mobile phone technician who has the expertise. So, you may consider taking it to the Carlcare phone repair shop near you.

The cost of an LCD screen repair depends on the phone type and model. Therefore, LCD screen repair for an expensive Android phone will cost more than a cheaper phone model.

Dust is seeping in due to a delay in repairing a damaged screen. If you crack your phone screen and do not fix it immediately, you could damage your LCD. Dust can also seep through the cracks on the screen and cause LCD screen damage.

Water or liquid damage: If you drop your phone into water or some other liquid, some of it could seep into the phone and damage the LCD screen. In this case, you will notice the damage immediately after you turn your phone on.

A fall: The glass and screen protector is supposed to shield your phone LCD from any damage. But, if the phone has a drastic fall, the impact can still cause Android screen display problems. You may notice after the fall that your phone comes on but has a blank screen or lines across the screen.

Poor replacement:If you are experiencing a damaged LCD shortly after changing a cracked phone screen, it could result from poor replacement. Perhaps the technician had used an inferior screen for replacement. As a result, the phone LCD got a problem.

The LCD is present in all phones and some other digital gadgets. LCD is the part of the screen that displays an image in terms of colors. In smartphones, it is the inner screen with all the display features for the phone. Phones usually have another screen or touchscreen protecting and enhancing the LCD screen.

When your phone mistakenly drops, you are usually worried about having an Android display problem. But, there is more cause for alarm if you are having Cell phone LCD problems. The LCD is more important than the outer glass covering it and more expensive to replace. Try to protect the LCD because you cannot manage a damaged LCD screen.

If you also asked, why is my phone glitching? Then you could have LCD screen problems. When the LCD is terrible, it can cause your screen to flicker or shake while using it. A flickering screen is not suitable for the eyes. Your screen might also become unresponsive.

You may sometimes mistake the glass for the LCD of your phone, but they are different. The phone works with a single display which has the glass screen and the LCD components coupled. But, the glass screen is sitting on the top while the LCD screen is inside.

If you have taken your phone for a repair due to the damaged glass, then you should have observed that the glass is different from the LCD even though they are together. Also, the LCD is integrated with the digitizer to allow the touch function to work.

Another difference is the price. If you have damaged the glass, it will cost you less to replace it. LCD is more expensive than glass or touchscreen. If the glass is damaged, you can still use the LCD. But if the LCD is damaged, the glass will not serve you for a more extended period.

The LCD is an integrated component of the phone connected to the digitizer. Since the digitizer converts analog signals to digital signals, some functions may be affected if you have LCD phone problems.

The touchscreen or touchpad:The LCD screen is connected to the device’s digitizer, transmitting touch from the outer glass screen. So, when your phone has LCD screen problems, your touchscreen might also stop responding.

Display: Since the LCD is the display point for the phone, a damaged LCD means that the image display is affected. Depending on the level of damage, you may only see a little, or In extreme cases, a damaged LCD could make it difficult for you to take calls.

Phone LCD problems should not be managed but fixed immediately. If you don’t, it can result in other more damages. Keep the phone away from heat and water too. Also, it would be best if you tried fixing a cracked phone screen as soon as possible.

As soon as you replace your LCD screen, ensure to keep it safe. You can protect your LCD screen by getting a good screen protector. A suitable phone case can also help protect your phone from the impact of any fall.

Accidental Damage is any damage due to an unintentional act that is not the direct result of a manufacturing defect or failure. Accidental damage is not covered under the standard warranty of the product. Such damage is often the result of a drop or an impact on the LCD screen or any other part of the product which may render the device non-functional. Such types of damage are only covered under an Accidental Damage service offering which is an optional add-on to the basic warranty of the product. Accidental Damage must not be confused with an occasional dead or stuck pixel on the LCD panel. For more information about dead or stuck pixels, see the Dell Display Pixel Guidelines.

No, accidental damage is covered for Dell computers or monitors which are covered under the Accidental Damage Service offering for that specific product.

For more information about Dell Limited Hardware Warranty and Dell"s Accidental Damage service offering, see the Dell Warranty & Support Services page.

NOTE: Other damages may be considered customer induced if determined by Dell Technical Support, an on-site field engineer, or at the mail-in repair center.

The LCD glass on the display is manufactured to rigorous specifications and standards and will not typically crack or break on its own under normal use. In general, cracked, or broken glass is considered accidental damage and is not covered under the standard warranty.

Internal cracks typically occur due to excessive force on the screen. This can be the result of some object hitting the screen, a drop, attempting to close the lid while an object is on the keypad area, or even holding the laptop by its screen.

Spots typically occur due to an external force hitting the screen causing damage to the LCD panel"s backlight assembly. While the top layer did not crack or break, the underlying area was compressed and damaged causing this effect.

If your Dell laptop LCD panel has any accidental damage but the laptop is not covered by the Accidental Damage service offering, contact Dell Technical Support for repair options.

Dell monitors cannot be repaired by an on-site field engineer or at the mail-in repair center. If you notice any damage to the monitor, you must purchase a new monitor.

Laptop users can strive to make the most of their laptops to maximize stability, longevity, and usability. Understanding and implementing a few best practices for the safe handling of their laptop will enable them to enjoy their laptop for many years to come. For more information, see the Dell knowledge base article Dell Laptop Best Practices for Care, Use, and Handling.

The difference between a LED TV and a LCD TV is that they are both LCD TV’s except one has LED stripes and the other has CCFL Backlights- (Florescent Tubes). I used a Philips Magnavox Emerson LG TV when testing these repaird, but they should work on other TV brands that are similar. Before you do any Repair, check to see if you are still under warranty, or are covered by a recall of your TV!!

Unplug the cable between power board and the main board. If the back-light turns on it means that power board is working and the problem is with the main board

If your Plasma or LCD/LED or CCFL/LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it *may* need some new capacitors in the power supply board or a replacement board

Unplug the cable between power board and the main board. If the back-light turns on it means that power board is working and the problem is with the main board

-Upon three unsuccessful start up attempts the TV locks itself in protection mode and needs to be disconnected from AC for 30-40 seconds before power attempts can be restore-Display Locks after 10 minutes–

1) the front green LED of your TV comes and stays on for 20-30 seconds, then turns off for 1-2 seconds and then keeps cycling like that, but the display never comes;

2) the display comes on for a brief few seconds, then the TV shuts off; in some models the display may not even come on, but still the relay clicking on and off and the green power LED activation and shutdown can be easily observed.

Look at the screen. If you see a blank screen with a red key on the bottom of the screen, press FUNCTION and MUTE at the same time. This will unlock the channel

A model number is needed to determine the unlock procedure, but most likely you will need a remote to unlock most TV’s. Below is a common lock procedure.

Choose On to disable all the buttons on the front of the TV. FPA Lock On will appear on the TV screen each time you press buttons on the front of the TV. You can still operate the TV with the remote control. You can still use the POWER button on the front of the TV, but only to turn off the TV (not on). Set FPA Lock to Off to cancel this feature so you can use the buttons on the front of the TV again.

3. Press and hold each of the remaining buttons on the TV, one at a time, for about five seconds, and then release. DO NOT use the buttons on the remote control - only use the buttons on the TV itself.

6. The TV should start automatically scanning for active channels from your input signal source. Make sure you have a good signal (antenna or cable or satellite).

If the TV still does not display anything, try the menu button on the TV and see if you can access the menu. If not, try using the remote control’s menu button.

If the TV is still locked and will not respond to any commands from the front panel control buttons or the remote control unit, it is apparently locked in a failure or diagnostic mode, and would probably have to be diagnosed and repaired by a reputable TV repair facility. Good luck.

If it is a thin vertical line that appears on certain video resolution/image then it is normal and is indicated in the users manual under troubleshooting. If the line is almost half the screen, it could be a problem with the cable connection between the LCD panel and logic board, or the LCD panel itself. Try reseating the cable first if it’ll solve the problem. I’ve done similar issue in the past. Reseating the cable worked for a couple of months till eventually the LCD panel is the problem. Replacing the LCD panel is quite costly and impractical.

If the lines are there all the time or intermittent but in the same location it is an indication of a bad panel. The panel driver can also be the cause of this symptom.

If the lines/bars are across the OSD Menu, and all the video signal inputs also same result, that means the TV LCD Panel is defective Most of the time this symptom is caused by a bad LCD Panel 95%. You can try refitting LVDS Cable or replacing Main Board capacitors or replacing Main Board—5%

Bad news unfortunately, their are two possible causes for what you have described, one would be a fault with the picture drive pcb ( Power Control Board ), and the other is physical damage to the LCD cell matrix, (screen).

There’s videos on how to fix this. It has to do with putting foam, in between panel frame and screen, which applies pressure to solder joints, which then completes the circuit- Contact my10cents, for better explanation.

Big Black Bar on bottom of TV Screen– If the bar that appears in the bottom is showing the energy saving logo, HDMI, Dolby surround and pc mode capabilities look into your remote.

Is the OSD menu affected as well? If yes then possibility could be the LCD Panel or the t-con board. Since you have replaced the t-con board then possibility is the LCD panel. There could be also a possibility of mainboard where upgrading the firmware could restore the picture. If the OSD menu is not affected then the LCD panel is good.

If the lines are across the OSD menu then chances is very high the LCD panel is the cause of the problem otherwise it can be due to bad T-con board or even Mainboard. Have you tested on the OSD menu to see if the lines are really across the menu?

White Lines– There are several possibilities that can cause white lines on an lcd screen. One would be high temperature on the logic board. Logic board drives the LCD panel and when it overheats can cause this display problem. One solution would be to clean the vent holes around the TV. One possibility that I have experienced myself servicing is a bloated capacitor on the power supply board. The worst possibility is a defective LCD panel, which is costly to repair, and sometime more practical to buy a new TV set.

Do you get blue screen when using x-box or DVD, VCR? Have you tried to reset cable box if you have one? Reset TV. Check all cable connections? Try these first.

Do you use the Set top box for cable channels? If yes then try connecting through HDMI and see if you can see the TV. Also do you get blue screen when using x-box or DVD, VCR?

What made you decide to change the mainboard? I ask because if the MENU does not appear, then this indicates a problem elsewhere within the TV. Also, did you check for any swollen, or bulged capacitors on the power supply board?

There are several problems that could cause this problem. It could be the connection from the T-Con board to the panel, try wiggling these cables around and see if the picture comes up even for a second. The Mainboard or it’s cables are not the issue in my opinion. The isdsue is either going to be a bad capacitor, faulty output from the power supply to the T-Con board, a bad connection from T-Con to panel, or the T Con or the panel itself are faulty.

Basic things you can do is to check the connections. If you have a cable box, check the video connections. And while doing that, unplug the TV and the cable box from the AC outlet for it to reset. These are the most likely cause of a blue screen

Most of the new TVs display a blue screen when theres no signal for it to lock on. Try unplugging it for about 5-10 minutes and see if that clears up the problem. Why? Because they have microprocessors in em (computer chips) and just as like with any other operating system, they can hang up or crash. This isnt an uncommon problem with todays TV sets. Unplugging it for awhile resets the microprocessor (in other words, it causes it to re-boot when you plug it in again).-

It could be the connection from the T-Con board to the panel, try wiggling these cables around and see if the picture comes up even for a second. The Mainboard or it’s cables are not the issue in my opinion. This is due to either a bad capacitor, faulty output from the power supply to the T-Con board, a bad connection from T-Con to panel, or the T Con or the panel itself are fault. Also, it’s possible the A/V receiver’s Video On feature was turned off by an electrical surge or something else.Turn the Video feature back to On and suddenly that bad blue screen was gone.

Repair/Solution: Change the cable box to a fixed resolution. OR have the customer install the latest TV firmware which can be located at your TV Brand Customer Support

Your power board needs serious help–If you want to repair you have to replace Switching Mosfets, disc capacitors and of course the main fuse, Rectifier Diodes and most of the time the transformer–Costly–Easier to replace Power Board–There is a chance the strike come through the cable line, so it’s possible the Main Board needs repair–That’s a small chance though, but I thought I’d let you know–Replacing power board should repair your TV. During a lightning storm, electrical power surges is induced to the transmission line eventually end to our household appliances. Our TV sets, computers are the most susceptible. For the TV set, the basic cure is to leave the TV unplug from the AC outlet for it to discharge and reset

5. wait another 30 seconds and some type of picture should appear—If that does not work–Unplug TV for 10 minutes and then hold power button on TV for 60 seconds–Plug in and turn on.

Unplug TV– On TV, hold the power button down while pushing and holding each button for a few seconds. After going through all buttons, (on TV) then plug TV back in and it should power up–

When the TV, has no Picture or Sound. Led turns from red to (Blue or Green). It means the Main Board has sent out the start up signal to the PSU (Power Supply) Board.

Now we need to know if PSU Board has all the correct output voltages. This means checking the secondary side output voltages of Power Board. Probable causes are the Power Supply, the T-Con board, Main Board or the LCD panel itself has failed.

No Picture/Sound The person who looked at my TV, stated that the high voltage power supply needs to be replaced. He explained that I have a low voltage supply which is why the power button is lit once pressed, and a high voltage supply which needs to be replaced.

Solutions: If the unit tries to turn on but begins to cycle on and off before any video is displayed and all of the SMPS (Power Board ) voltages are good, disconnect the LVDS cable at the T-Con board

You will have to go into the TV and check for capacitors or burn marks or cracked solder around the pins–Main board could be IC’s, or regulators–Panel–Disconnect panel and see if your TV stay’s on—

The flashing green light indicates a fault on the power board inside your TV. This will be due to a faulty component like a capacitor or voltage regulator. Faulty electrolytic capacitors on the power board are the most common cause of this problem. These capacitors will often leak and stop working as the TV set gets older,but could also be caused by the Main Board or the inverter board. (LCD TV ONLY) So we will have to take a look inside and maybe do some circuit testing and a visual of your boards-

In a dark room take a flashlight and at an angle shine it on the screen and see if you can see any movement. If you can see movement or see your menu then its backlight failure. If totally black screen with sound then its T-Con board. So if you see movement on a led screen, then it’s your LEDs inside the panel. If on a LCD TV you see movement and lamps are not turning on, replace inverter. If with a LCD TV your lamps turn on, with no picture replace T-Con Board.

Plasma is the most durable in terms of panel failure. LED/LCD is terrible for panel failure. (But every model gets bad apples. Samsung LED/LCD panels die frequently. LG panels are a lot more reliable.) Overall I’d say plasma is more reliable, and even if it fails, in most cases plasma is repairable, LED/LCD is expensive to repair and often difficult to troubleshoot.

3)- Switches off for a second or two intermittently. Relay clicks and standby LED remains green. Switches off intermittently with green LED on, no sound or no picture.

A blurry image on a high-definition LCD TV is typically the result of a mismatch between the TVs resolution capabilities and the resolution of the signal that is coming from connected devices, such as a DVD player or satellite TV receiver. Typically, blurry pictures result when a peripheral device connects to the TV through non HD cables and jacks.

Every time I would turn on my tv, the screen started flickering and would develop horizontal lines on the screen within 2 seconds. By that time, the screen would dim to black, it would stay like that until power cycled. The LED backlight works fine, and all signals and voltages from the power supply seem strong and fine.

I immediately replaced the t-con and mainboard, but the symptoms stayed the same. I later found the t-con board clicking (relays) multiple times after power-up, corresponding to the screen flickering. Disconnecting the LCD ribbon cables stops the clicking from the t-con board. I think this means that there is a short in the LCD panel itself.

Televisions are an expensive purchase and they come with a maximum manufacturer’s warranty of 3 years, which is not enough. Plus, they are delicate and can start to show signs of failure if not properly maintained.

Since TV is used practically everyday for hours at a stretch, it is bound to have some issues over time. Some of these issues can be taken care of at home, while some serious issues may need help from a professional.

If you notice vertical lines on your TV screen, this is a serious issue and should not be neglected. This problem usually occurs if there’s a loose cable wiring, loose or faulty board or a damaged screen.

This is a common problem in TVs and is a sign that your TV panel is failing. But before you call an expert to check the TV, you could try following these steps and check if they work:

Turn off the TV and unplug the AC power cord (main lead). Keep it unplugged for 15 minutes and then switch on the TV to check if the issue has been resolved.

If it continues to show lines, you may mostly have to get the panel replaced and replacing the panel can be a costly affair, depending on the TV and its model. LED panels range anywhere between Rs 8,000 to Rs 85,000, while LCD panels range between Rs 6,000 to Rs 25,000.

Try increasing the volume to the fullest on your remote to check the sound. Ensure the TV input is correct, the TV is not on mute mode or no headphones are connected to the TV audio out jack on the side or front of your TV.

Also, check if all the cables connected into the back of your TV are proper and not loose. If there is still no sound, you will need to call a professional to open the TV and check the circuit board.

When the TV has speakers that work perfectly fine but it has no picture, there is mostly an issue with the back-lighting system or the power supply board, which will need to be replaced. In the case of an LCD TV, it works with the help of a backlight that is used to illuminate the picture on the screen. When the backlight begins to have problems, the screen turns blank.

To fix this issue, the backlight will have to be replaced by a TV expert. Another possible reason is that the backlight on the LCD TV which has a power inverter has failed. When this happens, you may need to replace the inverter or the capacitor.

This is again a common issue that most people complain about. While switching on the TV using the remote, if you notice that the light blinks but the screen is blank, this is an electric connection-related issue.

You could try disconnecting the power cord from the unit and wait for 10-15 minutes before you plug it back in. If this is just a simple electric connection problem, this should fix the issue. If the screen still doesn’t turn on, you will need to call a TV expert to resolve the problem.

There could be several reasons for a flickering TV screen, which is mostly a common issue with LED TVs.One of the major reasons for this is loose or defective cables that result in screen flicker.

In the case of HDMI (High Definition Multimedia Interface) cables, you will notice snow or flickering colors. With other analog cable types, you will mostly notice a sudden change in the brightness and color intensity.

Replacing the cable or checking its firmness should resolve the issue. Another possible reason that causes flickering could be other home appliances that draw enough power if they are on the same circuit.

In some cases, this may also happen because the main processor board is commanding the LED back-lights to turn off via the control line. To resolve this issue, you will need to get a new LED strip or processor board.

Be it a panel issue or a major technical issue with the TV, resolving these problems is a costly affair. It’s best not to ignore any of these signs and call an authorized TV expert before the problem worsens.

Buying a television is a long-term investment, so do not compromise. Buy one with a minimum of 4K resolution because new technology like OLED and HDR is pretty much only on 4K TVs.

Choosing a TV size plays an important role. If the screen size is too big for your room, you may notice the loss of clarity. To measure the distance between the sofa and the TV. If the viewing distance between the sofa and your TV is between 5 – 10 feet, a 40 – 42 inch TV should be perfect for your room. If the distance is less than 5 feet, a 32 inch should work best.

Don’t just ask for a smart TV. Most TVs available today are smart TVs with easy access to Netflix and other online apps. So do not be tricked into buying one just because its a smart TV.

Follow Onsitego on Facebook, Instagram, Twitter, and YouTube to get the latest news, reviews, maintenance tips, and videos about your favourite gadgets and appliances.

How much DSE you see depends partly on the model you purchased. Pricier models generally feature improved better uniformity, mostly because manufacturers use more rigorous quality standards for their high-end products. But, no matter how much you spend, uniformity is unique to every individual unit, meaning you don"t really know how much DSE you"re getting until you see it in person.

Is your obsessive side getting twitchy yet? Before we discuss upping your Xanax prescription, let"s review how the DSE demon begins its possession of your beloved screen.

If you own a plasma TV, the pixels are individually illuminated and all capable of achieving the same level of brightness. This tends to make DSE less visible in these devices, particularly in high-end models.

Still, DSE may afflict cheaper versions, particularly if the anti-reflective coating on the glass that overlays the screen is of low quality or poorly applied. Furthermore, as the display ages, the phosphors in the screen may begin to wear out or malfunction, all of which can contribute to less uniform images, which is often apparent particular in scenes with fast panning shots.

In LCD and LED TVs, DSE is typically a bigger issue, one that"s due to the way these units are illuminated. Before we proceed, it"s worth mentioning that although marketing-speak often treats LED and LCD TVs as completely different technologies, they"re not different beasts.

LED units could be more accurately described as "LED-backlit LCD televisions," but salespeople and consumers alike are too lazy to utter that tongue-wearying phrase while haggling in a big-box store. What"s important to realize is that both categories rely on LCDs (liquid crystal displays), which act as shutters that either block light or allow it to pass, depending on the image that"s being rendered on the screen.

There are a variety of factors that affect LCD quality, notably illumination source. Older LCD TVs, for example, used multiple cold cathode fluorescent lamps (CCFL) to light LCDs from the rear. They provide generally smooth and even illumination, but they make the final product rather bulky.

More modern TVs rely on LEDs (light-emitting diodes) as a light source. Some models have what"s called full-array backlighting, in which the LEDs are stationed in regular intervals behind the screen, creating even lighting and excellent picture quality.

Other models incorporate what"s called edge lighting, which positions the LEDs along the edges of the screen. In general, the overall picture quality isn"t quite as good as a backlit screen, but manufacturers still use it because it allows them to build substantially slimmer TVs.

Regardless of the lighting source, sometimes it"s not the technology itself that results in DSE. It might be due to the way the display was handled at the factory or even en route to your home.

If you"ve ever pressed a little too hard on your smartphone or computer screen, you"ve likely witnessed a bit of discoloration, clear evidence of how sensitive LCDs are to physical pressure. Now, picture a huge manufacturing facility that cranks out thousands of these units per week. It"s easy to see how a bit of mishandling could alter the screen"s consistency.

The same goes for shipping. Some units travel long distances in cargo boxes, and then take bouncy rides in your car to their final resting place on your living room wall. That"s a lot of opportunities for tiny mishaps to affect LCD uniformity.

If the picture responds to input but displays a messy image, such as jumbled multicolored squares, the AV (audio visual) board may be damaged. This is usually a rectangular circuit board located near the audio and visual cables. Replace obviously damaged parts using a soldering iron, or order a replacement board and carefully install it to the same screws and ribbon cables.

The main control buttons may be faulty. Clean them with a metal cleaner, or jostle to attach a loose connection. If necessary, locate the circuit board they are attached to and re-solder any broken connections.

Check input cables for damage, or try other cables of the same type. If necessary, inspect the circuit board they are attached to and re-solder damaged connections.

Accidental Damage is any damage due to an unintentional act that is not the direct result of a manufacturing defect or failure, and is therefore not covered under the standard warranty of the LCD-Monitor. Such damage is most often the result of a drop or an impact to the LCD screen or any other part of the product which may render the device.

Non-functional :Such type of damage are only covered under an Accidental Damage service offering which is in addition to the basic warranty of the computer. Accidental Damage is not to be confused with an occasional no display or stuck pixel.

The following are examples of Customer Induced Damage to PC. This list is not exhaustive and is intended only as a guide. For further information, contact the ASUS Service Centre or an Authorized Service Provider.

Ever had your TV showing nothing but a black screen even if the audio was working? Unfortunately, that’s a common issue with low/middle-end LCD/LED TVs these days… Even more frustrating, this issue often comes from a rather tiny and cheap component that can be easily replaced. Most common issues are:

One of my relatives had this exact symptom happening all of a sudden. This problem on low-end TVs often occurs within the first couple years. As the repair costs for that kind of TV is pretty low, considering repairing it yourself might be a good idea!

The first step into repair is to find the root cause of the issue. As backlight failure is a very common issue, this is the first thing to test. To do so, the easiest way is to power on your screen, put a flashlight very close to it and check if you can see the image through. The image would be very dark, like turning the brightness of the screen very very low.

That implies disassembling the TV to access the backlight which is between the LCD screen in the front and the boards in the rear. In my case, with a Samsung F5000, I had to process as follows:

First we have to remove the back housing to reveal the boards (from left to right: main board, T-CON, power supply) and disconnect the LCD panel from the T-CON board.

Note: Older TVs have neon tubes for backlight, which is thicker and less exposed to this kind of failure. LED backlight is the most common thing these days, but do not mistake an LED TV with an OLED TV. The first one is a classic LCD panel with a LED backlight, whereas the second is an OLED panel that doesn’t need any backlight as it is integrated in each pixels (making the spare parts much more expensive by the way).

As we can see, the backlight system is made of 5 LED strips. First thing to do is look for burnt LEDs. Most LED backlight systems have strips set in series, meaning that if one of the them fails, all the system goes dark…

Using a multimeter, we can confirm that the strips are indeed set in series, so now we have to test each strip individually. Professionals use LED testers such as this one (about 40$ on amazon) but as I didn’t had one at the time, I decided to make one, McGyver style!