lcd screen backlight repair brands
What can we do if our TV doesn’t function properly? It’s not always necessary to replace your device, sometimes it’s possible to repair it, especially if you contact a company that provides TV repair services.
You turn your TV on, see flashes on the screen, then it gets black. Shine a flashlight on the screen. If you see a picture, most likely it’s faulty LED/LED’s. One or several of them do not function. Besides, there may be problems with the LED-driver. There is no voltage, so LEDs don’t function.
Firstly, the backlight must be checked. Sometimes the problem is seen at once – one or several lamps are burnt out, their colour has been changed. If nothing like that is seen, you will have to check all LEDs. Power is applied to every LED strip. The one that isn’t flashing is out of order: it may be a break or a short-circuit contact. Then each LED of this strip is checked. The burn out LED (or LEDs) is desoldered and replaced by a new one.
But sometimes you need backlight LED strips replacement. You must tell us your TV model number. According to it our staff will find out what LEDs must be replaced and where they are located. Besides, you can do everything yourself following the manual but it’s better to get it serviced.
Backlight lamps don’t illuminate, or they stop working in some minutes, the screen flickers, the inverter doesn’t work after you didn’t use your TV for a long time.
Very likely the backlight inverter doesn’t function. To be sure do a flashlight test. Switch off the light and turn the TV on. Then take a flashlight and shine it on the screen at various angles. If you can see at least the signs of the picture, the backlight inverter doesn’t function.
Power supply (PSU) doesn’t work. In such a case there is no picture on the screen or it disappears in several minutes, the PSU indicator lamp flickers or doesn’t illuminate. If you do a flashlight test and nothing is seen on the screen then you will have to replace PSU. This can happen for the following reasons:
You see stripes, dark or grey spots on the screen. It’s impossible to regulate the sound, the TV menu doesn’t appear, you cannot change the settings, etc. USB, HDMI and other connectors fail to function. The TV-set is off. Practically all the operating processes depend on the main board, so the problem is in it.
You can check the capacitors – maybe, they have popped. Try also to check ribbon connections – the ribbon cable may get loose. If that doesn’t help, call a TV repair centre. It is impossible to troubleshoot the main board without specialists.
There are vertical or horizontal stripes on the screen, the picture flashes, it doubles, you can see white or coloured spots on the screen. In this case the matrix is damaged.
If the matrix flickers (temporarily or constantly) or there are stripes on the screen, the picture is deformed, probably these may be problems with the matrix ribbon cable.
On the whole, taking into consideration all mentioned above, it must be understood that only a television serviceman can effectively troubleshoot and repair different problems in your TVs. Certified TV repair technicians will diagnose your device and decide what’s necessary: to repair or replace it.
Creative IT is an IT consultant and a computer repair and maintenance company based in London, offering its services all over the UK. Losing the backlight makes the laptop unusable. We undertake Gateway, Fujitsu, Lenovo, NEC and Alienware.
Laptop Backlight Repair Services offered by Creative IT involves very skillful replacement of the backlight since the LCD is made up of very thin glass and needs to be handled with immense care. The backlight of a laptop uses voltages up to 1000 Volts. The Laptop/LCD backlight or a CCFL (Cold Cathode Fluorescent Lamp) has a life time of 10000 to 20000 hours and is driven by an inverter. Laptop Backlight is found behind the LCD screen and comes in various sizes, lengths, diameters and intensities. This fluorescent cathode is filled with mercury vapor which allows for the display of different colors on the laptop screen. Extra pressure applied on the tube’s ends can cause leakage of the gas.
Creative IT’s experienced laptop engineers can even carry out onsite repairs at the client’s home or at your business location. Laptop Backlight Repairs are usually done within 48 hours. We have very affordable and cost effective repair backlight repair charges, especially with comprehensive maintenance contracts. For more details regarding our info@creativeit.tv. You can even give us a call on 0207 237 6805.
The 17" Dell LCD monitor I found was no exception. When I first plugged it in, it would cycle power on and off continuously, with a notable burning smell. Further inspection revealed a fried power transistor. When i replaced it, the monitor stayed on, but the backlight would flicker on and off, then finally shut off after a few seconds..
For the panel light filters, there should be some diffusing paper/plastic behind the LCD, 3 sheets (one clear, one reflective, one translucent white), and then a large Plexiglass-like filter. I removed the Plexiglass and everything behind it, only keeping the 3 thin paper-like sheets behind the LCD. Shining a light behind the LCD resulted in an even white glow
4) Relocate the boards from the LCD panel to the CRT shell, mount LCD panel, and connect everything up. For mounting everything I drilled holes and used zip ties.
The LCD frame was smaller than the CRT"s. I just cut out some cardboard to fill in the gaps to block out the light for now. I know, it looks ugly. Later, I"ll make a better looking frame.
This would be great for building a cheap MAME arcade cabinet... dead LCD"s are easily found for super cheap... and you"d have lots of room behind it to mount your light source.
I don"t mean to be a spolisport, but... why? The whole point of an LCD monitor is that it is thin and saves on desk space. You just made it as big as a CRT monitor, out of a CRT monitor. Why not just use the CRT monitor instead?
One functioning screen is better than two dead ones. CCFL bulbs bought from a reputable place can cost upwards of $70. I"m going to try to wire an LED array to get a screen of mine working. If that doesn"t work, I may do this. SO MUCH potential in a dead screen.0
I wonder what would happen if you had a plexiglass panel and drilled holes on the edges. then in those holes you place superbright white leds, then on one side of the panel you put a tinfoil sheet. would that make an even light? because the leds arnt facing the screen. you could also sand down the frotn of the panel to make it less clear0
Nice one. I May be able to get hold of an LCD with dead back light. I wasn"t too sure about how to go about reviving it. May try using supa-bright LEDS for back light and some sort of diffuser.0
Mitsubishi Electric company from Japan is well-known the world over for large-screen display panels and industrial-strength LCD monitors. Some of the popular models in use today include the Mitsubishi LDT461V industrial monitor along with the MDT461S and MDT402S LCD monitors.
You may notice that all of these monitors are pretty big in size, ranging from 40-46 ″. To make a comparison, they are similar to the sizes common among plasma televisions, but the technology that powers them is pure LCD.
And like any other LCD monitor manufactured in past two decades, there are two problems that affect even the Mitsubishi monitor– (1) Scratched screen, and (2) Dead backlight.
Since Mitsubishi LCDs are used as industrial-grade displays, the front panel is pretty strong and resistant to scratching. There’s a manufacturing difference between screens used in an industrial setup and one installed in homes.
In the latter case, chances of minor yet visible scratches across the screen are pretty high. The quick fix is to either use a little toothpaste to “fill in” the scratch gaps, or to use a white eraser and vigorously (but gently) rub over the visible scratches.
Make sure it is a brand new one that has never been used before if you’re using an eraser. I’ve tried this scratch repair trick on certain projection TVs and it works fine there.
The second problem is that of backlight repair. The backlight is a thin CCFL tube that lights up the monitor screen. It is powered by an inverter board that converts low-voltage DC input to high-voltage AC output.
A regular backlight bulb lasts anywhere from 3-5 years before it loses part of its brightness. As time progresses, the whole screen goes black and you have no option but to replace the backlight.
Backlight failure is a problem that affects all LCD monitors– including Mitsubishi– though the lifespan will vary based on how you operate it and the quality of in-built electronic components.
The easiest way to repair a LCD backlight is to get a compatible replacement from eBay or the manufacturer’s website. For the most part, you don’t need to buy a new inverter as the existing one can be reused.
The second problem is that of backlight repair. The backlight is a thin CCFL tube that lights up the monitor screen. It is powered by an inverter board that converts low-voltage DC input to high-voltage AC output.
Repairing your TV can be a little tricky, but with the right diagnosis and part number(s) and a few tools, almost anyone can fix their TV and save money. We"ve helped everyone from kids (with some adult supervision) to grandparents successfully repair their TVs! Now it"s your turn -- here are some tips to help you get started on your TV repair journey.
An accurate diagnosis is the first step in fixing your TV. Once you figure out what"s wrong with your TV, you can narrow down the defective part(s) that"s causing your TV"s symptoms. A quick Google search of your TV model number will help you figure out if your TV is an LCD, LED or Plasma model. Once you know your TV type, use these videos as general guides to help you properly diagnose and repair your TV.
DLP TVs can be difficult to move around, but they"re relatively easy to diagnose and fix. In this section, we list our popular DLP repair videos by part and brand.
TV repair costs between $60 and $350 with most spending $207 on average for LCD, LED, plasma, and 4K TVs; costs are higher if repairing older DLP, projection, and HD TVs. TV problems like display issues, powering-on problems, or sound issues can be fixed. Pickup and delivery fees may apply.
The cost to repair a TV will include the price of parts and labor costs, plus other associated costs. Additional charges include a trip fee for a technician to come to your home, a fee to transport your TV to and from a repair shop, and the diagnostic fee to determine what needs to be replaced.
The cost to repair a TV screen can be significantly more than the cost of purchasing a new TV. For this reason, replacing or repairing a broken TV screen is not considered feasible.
Broken TV screen repair is not a service offered by most TV or electronics repair companies. For example, BestBuy"s 90-day warranty, does not list broken TV screen repair as one of the problems they service.
Unless you are trying to fix a TV from the ’80s or earlier, cracked TV screen repair is not feasible; the entire display panel must be replaced instead. The cost of a replacement TV display panel is more than the cost of buying a new TV, and that’s before labor and other service costs.
The cost of TV screen replacement is generally the same as or more than the cost of buying a new TV. Therefore, replacing a broken or malfunctioning TV screen is not considered a viable option. If the TV is under the manufacturer’s warranty, the manufacturer may replace the entire unit.
TV manufacturers do keep replacement TV screen panels on hand to support products under warranty in case the screen malfunctions, due to manufacturer defect.
If you still want to replace a damaged or malfunctioning TV screen, your best option is to find a used replacement panel or a broken TV of the same model on which the screen is still functional. You might find one on eBay, and you can hire a technician to change out the panel.
The cost of a used replacement TV panel ranges from $50 to $350 or more, excluding shipping, depending on the brand and size. Note that the chances of finding exactly the part you need in excellent condition are slim, and the cost excludes the cost of installation by a repair shop.
Whether your TV is LCD, LED, plasma screen, or 4K (Ultra HD), the cost to fix common problems ranges from $60 to $350, depending on the repair type and the brand of TV being repaired.
These repair problems could have more than one possible source, so a technician should take time to narrow down the exact problem. TVs are repaired by replacing faulty components.
A TV inverter repair costs $104 to $171, including parts and labor, with an average cost of $138 for a TV with one inverter board or $178 for two. Parts range from $7 to $74, and the average labor cost for TV inverter repair is $97 per hour.
The function of an inverter board in a TV is to power the backlight of the screen. The inverter board requires a few hundred volts of power. If the inverter board goes bad, this would cause the TV to power on and have sound but no picture.
When an inverter component goes bad, it is usually replaced rather than repaired. In some cases, the capacitors on a converter board fail, and a technician can fix it by replacing the capacitors rather than replacing the entire inverter component. However, if an entire inverter board replacement is not available for the model of TV being repaired, replacing the capacitors may be the only option for TV inverter repair.
A flat-screen TV bulb replacement costs between $60 to $115, with most homeowners spending $84 for parts and labor. The price for replacement bulbs ranges from $18.50 to $80.
If an older model LCD TV or projection TV powers on and has sound but no picture, this may be due to lamp burnout, which is both common and expected. In this case, replacing the bulb will fix the problem. An experienced technician should be able to replace the bulb quickly and easily.
TV backlight repair costs $100 to $122, including replacement parts and labor, at a repair shop. In-house repair costs are more due to trip fees. The price of backlight replacement parts averages around $2.50for each LED and between $20 and $25 for each CCFL strip.
If the CCFL strips for your TV are no longer available, a technician can convert the backlight from CCFL to LED using the same number of backlighting strips. Each strip of LEDs costs between $12 and $30.
A new inverter may be needed to power the LEDs, costing between $7 and $74before labor, or an average of $40. In some cases, a repair shop can convert a CCFL backlight to LED without installing a new inverter.
Backlight failure in a TV may also be due to failure of the power inverter that supplies power to the backlight. In rare cases, both the inverter and the lighting components fail.
Repairing a TV power supply board costs $23 to $234 for parts alone. Completely replacing the power supply board costs $250 for parts and labor. If one capacitor has failed, the cost for replacement capacitors is low. However, it’s more cost-effective for the technician to replace the entire board rather than spend time trying to diagnose and replace faulty capacitors one by one.
TV capacitor repair costs $60 to $129, including parts and labor. The cost for the replacement part ranges from $0.06 to $14, with the labor portion ranging from $60 to $125 per hour. TV capacitors protect the circuit from getting too much power, filter signals, and facilitate changing channels.
Flat screen replacement glass is not available. The only option for flat-screen TV glass repair is to try optical glass glue, which costs $1.70 for a 5-ml. tube. This may be an option for TV glass repair if the crack is only a few inches or less. TV panels are built as one unit at the factory, with the glass adhered to the display panel.
In-home CRT repair ranges from $199 to $249. The cost of repairing a CRT picture tube ranges from $199 for a TV that is 27 inches or smaller to $249 for a TV that is 28 inches or larger.
A TV fuse repair costs between $61 and $136, with most spending $99 on average. The cost of the replacement fuse itself is $1.50 to $11, while labor ranges from $60 to $125 per hour. Additional fees may apply.
LCD flat-panel repair is not considered cost-effective. If the glass is cracked or the display is physically damaged, it is cheaper to replace the entire TV than to repair or replace the display panel.
Estimating TV repairs costs by brand is not something TV repair shops offer, however, there are general prices by type. When looking for specific repair costs for your TV, you’ll find them in the common repairs price list above. Pricing applies to brands such as Samsung, LG, Sanyo, TCL, Insignia, HiSense, Sony, Toshiba, Pioneer, and Vizio.
More popular TVs are usually less expensive to repair because repair shops order replacement parts for them in bulk, which allows them to buy those parts at a lower cost.
The cost of flat-screen TV repair ranges from $42 to $359. You cannot fix a broken screen, but the price of a new flat-panel TV starts from around $249 for a 1080-mp (non-4K) LED TV from LG to as much as $14,999 for an 85-inch 8K LED TV from Samsung. A TV referred to as a “flat TV” or “flat-screen” TV might be any of the following:
LCD TV repair typically costs $60 to $85 for diagnostics testing, and $200 to $300 to perform repairs. LCD TVs use backlighting, which may fail. Newer LCD TVs use LED strips for backlighting. Older ones might use CCFL. If CCFL backlighting fails, a technician can replace it with LED backlighting.
An LED TV is just an LCD TV that uses LED backlighting, which all newer models do (older models use CCFL backlighting). The cost to replace one LED backlighting strip ranges from $100 to $122, including parts and labor.
The cost to replace the motherboard, inverter, or LED"s in a 4K TV ranges from $100 to $275 or more depending on the brand and model. The cost for screen repair for a 4K TV is irrelevant because it cannot be fixed or replaced at a cost that is lower than the cost of a new 4K TV.
Digital light processing (DLP) TVs are also known as projection TVs. DLP big screens have not been made since 2012, and DLP TV repair is usually not worth the cost except for a lamp burnout, in which the bulb can be replaced. The cost to replace bulbs ranges from $60 to $115.
TV repair shops charge an average $60 to $125 per hour, or a flat rate of $50 to $250, which includes the diagnostic fee. Additional costs after that depend on the repairs needed and the brand and type of TV. However, most stores will have a minimum charge of about $90.
Best Buy TV repair is provided through the Geek Squad TV & home theater service. Geek Squad TV repair starts at a base cost of $100 for a diagnostic fee. TV repair is covered under Best Buy’s protection plan, which costs $280 per year when you purchase a TV from Best Buy at the time of purchase, or within the return period printed on your receipt.
The brand and model of your TV will dictate the final repair cost, with more expensive brands and larger TVs costing more to repair. Consider the remaining lifespan of the TV before paying for repairs. You can now buy bigger TVs with more features and better displays for a TV that won’t need repairs for a while and probably comes with a warranty.
The cost of labor to fix a TV ranges from $60 to $125 per hour, or a flat rate of $90 to $299. If the work is performed in your home, the cost ranges from $25 to $125 per hour plus the trip fee. Most TV repairs take 1 to 3 hours if the repair specialist has the parts already.
If you live in a remote area, you may need to ship your TV to a repair facility, costing $99 to $175. Be sure to choose a delivery service that allows you to track the shipment and confirm delivery. When sending your TV into a service center for repair, you will be contacted regarding the associated costs and asked to process payment before the repair is completed, which usually takes two weeks including the shipping time.
Many TV repair shops charge a diagnostic fee that ranges from $20 to $60, depending on whether it is done in your home or the repair shop. Some shops charge a flat fee that ranges from $50 to $250that covers both the diagnostic cost and labor cost. In many cases, the initial diagnostic fee will be applied to the repair cost if you have the shop do the repair.
The more expensive a TV is, the more sense it makes to purchase an additional warranty to defray the potential for costly repairs. Best Buy offers an $89 five-year extended warranty for entry-level TVs. On larger TVs such as the 85-inch Samsung QLED 8K TV, which costs $14,998, the five-year warranty from Geek Squad costs an additional $1,699—11.33% of the cost of the TV.
With modern TVs, repair entails component replacement or replacement of capacitors, for which high levels of certification are not necessary. Generally, TV repair shops will let you know if their employees have certification.
Satellite dish repair is either covered by your satellite service company or the cost for a technician to fix it ranges from $80 to $150. Repairs may also be billed at an hourly rate of $50 to $65.
There are various ways you might be able to save money on TV repair. These include transporting your TV to a repair shop, using a shop that charges in 15- or 30-minute increments, diagnosing the problem yourself, using salvaged parts, and doing the repair work on your own.
You can also consider the cost of TV repair when purchasing a new TV. More popular TV models are less expensive to repair because repair shops buy parts for the most common TVs in bulk and are therefore able to get them at lower prices.
Inverter is bad -It is possible that the inverter, which powers the backlights, has gone bad and needs to be replaced. It’s also possible that one or more capacitors on the inverter have gone bad, in which case a technician may be able to replace capacitors more cheaply than replacing the entire inverter.
Lamp burnout -In a projection TV or older LCD TV, no picture may be caused by lamp burnout. In this case, a technician can replace the bulb quickly and easily.
The primary way to save money on TV repair would be to perform the work yourself. This may require you to purchase and get familiar with various tools such as soldering tools, and methods for replacing a capacitor or some other component.
The right parts - It can be complicated to determine which component of a TV is failing and causing the TV not to work correctly. If you buy a replacement part and perform the repair yourself, the TV may still not work, either because you replaced the wrong part, the part was old and not working properly to begin with, or you did not perform the work correctly. Buying multiple replacement parts can become costly.
The cost of repairing a TV could be as much as $500 if multiple repairs are needed. Consumer Reports recommends not to spend more than 50% of the cost of a new TV repairing the old one.
If you have a newer TV that cost thousands of dollars, having it repaired would most likely be cost-effective. If the TV only cost a few hundred dollars to begin with, replacing the TV is more likely to be the best option.
Not included in these prices from Best Buy are 1080P screens, which range from $249 to $279 for 43-inch TVs from brands like Samsung, Sony, and LG. On the upper end, Sony and Samsung both have 95-inch 8K LED TVs for $69,999.
In most cases, a flat-screen TV can be fixed. The exception is a physically damaged display panel or screen. Most other issues including failing speakers, backlights, or power supply. Burned out fuses and damaged input ports can also be repaired.
If the screen is not physically damaged but is not showing a picture or is displaying “snow’” or vertical or horizontal lines, a technician can repair the TV by replacing failed components. If the screen is physically damaged, it cannot be repaired.
You cannot replace a broken flat-screen display. New TVs costs anywhere from $249 for a 1080P (non 4K) LED TV from LG to as much as $14,999 for an 85” 8K LED TV from Samsung.
If you live in a remote area, you may need to ship your TV to a repair facility, costing $99 to $175. Be sure to choose a delivery service that allows you to track the shipment and confirm delivery.