yamaha keyboard lcd screen not working brands

My screen went blank on both halves. I followed the instructions kindly provided by Zerald (see Nov. 20, 2017) A big thank you to him as it completely fixed the issue. I used a PowerFist soldering station from Princess Auto (Canada) set at 150 F (the minimum setting) to reset the glue. If you run the flat blade over the flex tape cable where it attaches to the circuit board before turning on the heat, you will feel the ridges in the flex cable. After turning on the heat to the soldering tip, I repeatedly passed over the flex tape where it joins the metal and the whole part behind where it is glued to the board (about 1/4 inch). Make sure to do both pieces of flex tape cable as each one is the data supply for either side of the screen. I powered it up after each successive try and saw the screen steadily improve from no image when I started to fully functional after three applications of heat and pressure. The final result was the flex tape cable had no ridges, the glue appears to be reset, and the screen is once again fully functioning. Other than purchasing the soldering station ($30.00 CDN) there was no other costs. I own two Yamaha guitars and two Yamaha keyboards but will never buy another Yamaha product due to their companies" lack of accountability to an obvious product flaw. I was quoted about $300.00 to have their local service company replace the screen! Appears it doesn"t need to be replaced.

What I did was undo all the necessary screws on the back to separate the control section from the keys. This gives you access to the display board and its two brown ribbon cables. pressing / rubbing them while the unit was turned on made a further mess of the screen and confirmed this was the problem.

SOLUTION);.. turn machine off INTERMITTENTLY 30 min on .... place a Makeba quartz crystal on the screen( with 4 small magnets on to top) on the portion of the screen that is blank;...in the middle of the screen if totally blank...leave on on overnight...repeat and vary. ..{ USE YOUr imagination)>... turning the machine on and off to check results..stop placing crystal when screen activates

I just found this page but I"ve had the same issue with mine for a few years. I"d love to know a solution. The keyboard plays but the screen is a mess. Half of it works. The other half does not.

It happened to my YPG-625 too. One day after turning it on I got half a screen. The problem was resolved by turning the keyboard off then turning the contrast knob all the way up (located on the front input panel). Then turning the keyboard back on and re-adjusting the contrast level. That got it back to display the full screen.

Hi, I have a big problem with my Yamaha ypg-635. I bought it in 2009 and I have not had any problems, now 2017 - 2018, when I return to my school and I tried to turn it on I can see that the control screen turns on completely but when I want to play the keys, I do not get any sound at all , I raise the volume and there is no sound. I tried with the headphones or with an amplifier and there is no sound either, but very soft in the background you hear a faint buzz soud.

The problem is in poor contact in-between LCD’s PCB and flex cables that comes to the LCD panel(two cables). It seems that Yamaha(or who manufactured this LCD assy – I do not know) uses some kind of anisotropic conductive film(instead of solder or connector) to connect those two flex cables to the PCB.

Then I just pressed (press hard but no too hard, film’s datasheet says ~18kg/cm2) and held for ~10 seconds by warm soldering tip on the flex’s pins over the places where they are glued to the PCB. The T12-D4 is wide enough to ‘re-glue’ 4..5 pins at one iteration, so, total process took 2…3 minutes (and 30…40 minutes to disassemble/assemble keyboard).

The contact point from the attached electronics on the glass support is defective. A repearatur is not possible. The glass is multi-layered. I suspect the defect in the glass carrier in it.

I have a Ypg-535 and seem to be having the same issue as everyone, but instead my screen is completely gone. I have only used the keyboard a total of about 8 hours in the past year, due to being busy with school work, and am wondering if this issue is possibly caused by underusage. I am wondering if there is any solution to this problem without having to buy a completely new keyboard.

Screen has been malfunctioning for years. Used to be just half gone. Now it"s fully gone. I"ve checked the contrast. My main question is will a 25$ 320 x 240 dots LCD display (backlit) not from yamaha work or do I have have to get the 113$ or more replacement screen specifically for yamaha? ctiwari2@ yahoo.com 812-361-8798

I am having a similar problem that seems to be epidemic, when adjusting the contract control the fixed half goes bad and the bad part goes good! There are replacement screens on aliexpress but man given the amount of people out there with this problem Yamaha should be held accountable.. very disappointing.

I have the same problem. However, I"m a total cheap skate and don"t want to part with $150 to buy a new screen. So, instead I attemtped to take the DGX620/YPG625 keyboard apart hoping I could get the display working without buying a new part.

Once I got the keyboard apart I pulled the screen out and plugged it back into the main board except now I had the screen facing me while the keyboard was open. Once the screen was facing me I plugged in the AC power. This way I was able to play around with the cables while seeing if the display problem got any better.

Results: I managed to find a sweet spot where the cable would recieve a good signal and the display problem disappeared completely. However, once all put back together and after playing the keys for a few minutes the display problem came back. Clearly a new LCD should not be necessary and I will attempt to take apart my keyboard again this time cleaning all display connections as well as the end of the display cable.

Over 100 screws to take this thing apart and an hour time to toy with it and put it back together. I hope this helps anyone else looking to repair without purchasing new parts. I will post again with the results of my second attempt, however, I may not try again for a few days.

many yamaha key boards have this issue very early after.so please give me a solution for this issue.also i like to propose to yamaha corporation if you can include vedio out jack for every arranger key boards its very helpfull.

i have a yamaha 625 ypg keyboard i opened it up to find that there is something on the contacts of the ribbon cable thats making the contacts not work because i test the cable with a multimeter and for some reason the contacts go bad !but can any body help me get a new ribbon cable my lcd screen works i just need to replace a cable .the one with the black flat peace on it! it seems to be the problem ! my name is greg swinney i can be reached at gswinney1@ yahoo.com thanks!!!!

Display should not malfunction - this is "main" info center for user. I"m a professional pianist and......... after 4 years display want half and half blank or gone.

This should be cover by Yamaha company, poor design and poor quality. 3 years ago - during performance - piano quit. After few hrs, piano works fine. After 4 months this same problem. Purchased new transformer, but didn"t help.

Just noticed it last night. I"ll work the fix but will probably heavily de-weight Yamaha for my next keyboard purchase given how common this issue is.

I have this same problem as many others with my YPG screen going half blank! This is totally unacceptable. I"ve had my Roland D-5 for 40+ years and the screen is still the same as it was when it was purchased. Yamaha should really do something about this. This screen is defective, bottom line!

Exact same problem! Just fixed it tonight with a new lcd. Attempted to clean all the connectors first with contact cleaner and q tips. No better. Should have tried replacing the horribly double-crimped ribbon cable, but didn"t want to go out again and have a show I need this for, so I just threw in the new LCD screen. 100 bucks and two weeks to ship but it works.

Yes, I agree JamieRI! I"m absolutely shore about this problem, and first just try to cleaning the contacts! My Yamaha DGX620 had the same problem but cleaning all contacts I fix it, and now the display is full, optimal working. :)

2) Clean flex tail contacts: If it has vertical streaks or half is blank, the LCD display is quite possibly good but contacts on the flex tail fingers are tarnished, producing poor contact at the connector. (I have not done this yet, so leave comments on your success)

I enjoyed my Yamaha piano but will never buy another one or recomend. The LCD screen only shows half screen. This seems to be a common problem. Very disappointed.

"However, I did find, when removing the old part, that the LCD main ribbon cable was folded (crimped) twice by the manufacturer to better align the wire with it"s connector on the main circuit board. I was told, in my training, never to crimp these wires.

However, I did find, when removing the old part, that the LCD main ribbon cable was folded (crimped) twice by the manufacturer to better align the wire with it"s connector on the main circuit board. I was told, in my training, never to crimp these wires.

I had purchased a Yamaha PSR I455 and it also has the display problem even after one month. I think the quality of the product is very low due to China manufacturing. Also they charge more on Indian customers. If you compare the same version in USA costs only 18K instead of 25.5K here in India.

I"m glad I made an exception to my normal policy of not purchasing optional warranties. With 4-year coverage I can take it to Best Buy and THEY can take off the 100+ screws.

I am so glad I came upon this site and saw the picture. It is the same problem that I am having right now with mine. I will not take it apart myself over the fear of it breaking the piano and the folk"s around here in my neck of the woods are not so helpful in fixing it for me. I was told to, "Get rid of it and buy a newer one." Yeah, I really wish money grew on tree"s too." So the story with mine as possible causes are: Has been moved around a bit, never dropped. Played everyday and in OHIO. Weather such as heat/cold could be a issue to any electronic device. So would Yamaha send a tech to my house for free to fix it or is this something that"s going to cost me?

I have a YPG-625. I suggest calling an authorized dealer is seeing how much they will charge you to replace you malfunctioning LCD with a new one. They get a bigger discount from Yamaha and it may actually be cheaper. If you want to do it yourself follow the below understanding I am not a qualified service tech just a do-it-yourselfer. There are a total of 114 screws (you will want to power screw driver fully charged) and 2 solder connections (you will need a soldering Iron and solder).

- DO NOT open the case unless you are aware of and comfortable with the fact that you could destroy your piano. You will need to solder 2 small connections (if you don"t know how to solder go to youtube).

5. Carefully lift up on the bottom part of the case just enough to remove the speaker wire connector so you can completely remove the bottom case. Take care not to damage the speaker lines

7. Remove ALL the ribbon cables (notice how they are oriented and where they go, you will need to replace these latter) except the main one (top right corner since flipped on face and you are looking from the Top of the piano).

11. Remove the Soldered power wires from the LCD. To do this, look at the connector on the board were this wire connects. The top part of this plastice white connector lifts up slightly (don"t pull to hard) then you can easily pull the wire out).

13. Solder this wire onto the NEW LCD. Make sure you connect the correct wire to + and the other to -. (See YouTube to solder correctly if you don"t know)

see if there is any improvement. Also, if the Display is back-lit, keep any external lighting away from the keyboard. 2) If back-lit, the Display"s internal bulb may be burnt out. 3)

As to DIY repairs, I"ve not yet tried fixing any such SERIOUS DEFECTS. It"s probably far more complicated than you think, and depending on the age of your keyboard, the intrinsic value you place in it, and the cost of professional repair, you have to decide what to do. I can tell you this: Displays are generally replaced, not repaired, and the charges can be high. I wish I could be more encouraging. In any case, please post a comment as to what you decide so all of us can learn from your experience. Thank you.

Note: The manual is the correct one for your model. The Yamaha DGX-630 and YPG-635 are one and the same model, at least as far as the manual is concerned. Here’s an image from the 1st page of the manual.

The image shown in the link is for the LCD unit which is compatible with your model. The Yamaha part number is WN7448800 (see Parts List, Part #320) and the supplier linked above was only to show what it looked like and the cost. Also it shows that it is no longer available and you would need to contact either them or Yamaha for alternatives.

Very interesting find. I guess that"s another reason to keep using my nearly 9 year old PSR-E433. Theories posted in the comments indicate that this could be a problem with the circuitry that feeds voltage to and controls the LCD, and not with the LCD screen itself -- especially since the EW425 uses the same LCD display and has apparently not had this problem.

Still, Yamaha should own up to this and make it right -- even if they have to delay the service due to chip shortages. At least admit there"s a problem and state that they will honor a free repair, done at any local authorized Yamaha service center, once the necessary parts become available.

Many people in the comments were saying how they would now go to other keyboard brands, but there just isn"t another keyboard in this price range from another brand that offers the ease of use, sound editing, and sound quality that the Yamaha PSR-E400 series keyboards do. I don"t think the Korgs (EK50, i3) and Roland (EX50 -- interesting that it"s model number is so close to the Korg) have any real tone editing in this price range (someone correct if I"m wrong) other than maybe adding some effects. And while the Casios certainly have the hardware to do this, they either put it in keyboards with confusing interfaces with little live control (CTX3000, 5000) or put it in keyboards with such limited front panel controls that you cannot go from selecting style control to selecting registrations without changing the mode of the soft-key buttons first.

Once you get used to having those filter and envelope synthesizer controls, along with the live-control knobs, it"s hard to imagine going back. Then again, even there, Yamaha made some very questionable choices by dropping the envelope control option from the live control knobs and also by moving those knobs to a very inconvenient place near the back of the keyboard.

The piano is the older brother of the Yamaha YPG-235 (76 keys), which is basically the same keyboard but has 1 octave fewer keys and hence a more compact case and a more affordable price.

Being a part of Yamaha’s “Portable Grand” line, the YPG-535 promises a portable design, a variety of piano-centric features and realistic “Grand piano” sound.

The keyboard is a great choice for someone who lives in a small apartment or in a dorm room where there is not much space. With that said, I wouldn’t call the YPG-535 super portable.

The keyboard comes with a sturdy matching stand, which is a well-built black unit that will securely hold the keyboard in place and keep it from wiggling around. So there’s no need to spend extra money and time on buying a stand.

The YPG-535 is a popular choice to gig with. So if you plan to move the keyboard around a lot, you’d probably want a more portable X-type stand, which can be quickly detached from the keyboard (no screwdrivers required) and easily transported.

If you feel the full-size keyboard (88 keys) is too bulky, you may want to consider the Yamaha YPG-235, which has very similar to the YPG-535 functionality but 1 octave fewer keys (76 keys).

At the same time, if you just want to play the piano, you can hit the “Portable Grand” button and play the Grand Piano tone across the entire keyboard (all the additional modes and settings will be turned off), which is very convenient.

Not only does it make it much easier to navigate the instrument but also allows you to take full advantage of educational features available on the keyboard, such as Music Notation Display and Yamaha Educational Suite.

I like the color, it looks unusual and makes a nice contrast with the black lining around the keybed. Moreover, the dust and finger marks aren’t as noticeable as on a black finish.

As for the mechanism, the model features Graded Soft Touch (GST) action keyboard. It’s Yamaha’s most affordable keyboard action, which doesn’t replicate the hammer action found on an acoustic piano.

The action definitely feels better than those cheap entry-level keyboards, where the keys aren’t weighted at all. But don’t expect the GST action to feel as authentic and heavy as an acoustic piano keyboard.

If you’re looking for an instrument that would mimic the feel of an acoustic piano I’d recommend considering keyboards with fully weighted hammer action.

Still, the YPG-535’s keys tend to be a little bit noisier than its competitors with fully weighted actions, such as Yamaha’s Graded Hammer Standard and Casio’s Tri-sensor Scaled Hammer Action II.

Below you can listen to the keyboard’s Grand Piano sound. It’s actually the YPG-235 (the 76-key version of the YPG-535), but they sound sound the same.

Not just piano, the number of instrument sounds in the YPG-535 is pretty impressive. There are 500 internal sounds available for you to play (127 panel accessible sounds + 12 drum/SFX kits + 361 XGlite additional sounds).

Yamaha YPG-535 comes with a pitch bend wheel, which allows you adjust the pitch of the notes being sounded. Using the pitch bend, you can reproduce various effects, such as guitar vibrato, choking, etc.

The master equalizer settings (EQ) will allow you to tailor the sound depending on what reproduction system you’re using, the keyboard’s internal speakers, an external speaker system or headphones.

You may wonder how it is possible to have 32, 64, or even 128 notes playing at the same time, if there are only 88 keys and we never play them all together.

Furthermore, using the sustain pedal, sound effects (Reverb, Chorus), dual-mode (layering),and even the metronome ticking sound takes up additional notes of polyphony.

For example, when you depress the sustain pedal, the earliest played notes continue to sound while you’re adding new ones and the piano needs more memory to keep all the notes sounding.

Another example of polyphony consumption is when you’re playing along with a song playback (can also be your own recorded performance) or auto-accompaniment.

When you reach the polyphony cap, the piano starts to drop the earliest played notes to free up memory for new notes, which in turn affects the quality and fullness of the sound.

You’ll rarely need all 192 or 256 voices of polyphony at once, but there are cases when you can reach 64 or even 128 note limits, especially if you like to layer several sounds and create multi-track recordings.

It’s especially disappointing because the keyboard offers lots of features and sounds for music-making, and due to the 32-note polyphony there will be lots of limitations.

For example, when you’re playing complex classical pieces or layering two sounds (Dual Mode), you may quickly start to run out memory, and the earliest played notes will start dropping out.

And even though, 32-note polyphony would be enough for a beginner who is not going to play advanced classical pieces anyway, for more experienced players it’s preferable to have at least 64 notes of polyphony, and ideally 128 notes.

The keyboard is equipped with 2-Way Speaker System(12cm x 2 + 3cm x 2), which means the sound spectrum is divided into 2 parts and played via the corresponding speaker units to provide powerful bass and clear treble.

But not just internal songs, there are tons of songs in MIDI (SMF format 0) available on the Internet, which you can download to your computer and then transfer to the YPG-535’s internal memory to use them the same way as internal songs (lessons, performance assistant, etc.)

Lesson 1  is called “Waiting”. The song will wait until you play the right note shown on the display. By the way, you don’t even need to know how to read music, because the display will show you (on the virtual on-screen keyboard) the exact keys you need to play.

The melody will slow down when you play wrong notes and gradually return to the original tempo when you play the correct ones, which allows you to practice at your own speed.

Even if it’s the first time you’re playing the keyboard, and you’re making a lot of mistakes, the PA will fix the wrong notes making you sound like a pro.

Since we’re recording in MIDI (not audio data), we can change the tempo, instrument sound, add effects and even correct/add new notes after the recording is finished.

The accompaniment (rhythm + bass + chords) changes according to the notes you play with your left hand (chords or even single notes if you don’t full cords).

The tuning function will allow you to adjust the pitch in 1-cent steps (100 cents = 1 semitone), which you can use to precisely match the pitch of the YPG-535 to that of another instrument.

The Yamaha YPG-535 comes with 5 ports used to connect the piano to different kinds of external devices. All of them are located on the rear panel of the instrument.

To connect the keyboard to a computer you’ll need an A to B USB cable, which doesn’t come with the keyboard, but can be purchased at any electronics store for less than 5 bucks.

There is a wide range of music apps and teaching software (e.g. GarageBand, FlowKey, MuseScore, etc.) that will expand the YPG-535’s capabilities in terms of music composing, recording, learning, notation creation and so on.

Moreover, the stand adds additional 13 lbs to the weight of the keyboard, which is okay for home use (the heavier, the sturdier), but not very practical for on-the-go musicians.

The keyboard comes with the Yamaha FC5 sustain pedal. It’s a plastic box-like pedal that comes with most of the Yamaha keyboards and unfortunately, doesn’t offer much realism and control (on/off only).

If you’re going to use the keyboard for performing outside the home, you’d want to consider buying a gig bag to protect the instrument during transportations.

First, the instrument has semi-weighted spring-action keyboard. Even though it adds some weight to the keys, it doesn’t come even close to the feel of a real piano action.

So for those who mainly need a keyboard for recreational piano playing or learning, I’d recommend a keyboard with a fully weighted key action, which feels much closer to the real thing.

Secondly, the YPG-535 has 32-note polyphony, which is quite limiting, especially for more advanced players who are going to play complex classical pieces, create multi-track recordings consisting of several instrument parts and so on.

However, since the YPG-535 has some major drawbacks I mentioned above, you’d probably want to consider some other keyboards in this price range that don’t have such flaws.

And the other 3 keyboards are, the Yamaha P-45, the Casio PX-160 and the Yamaha DGX-660. Compared to the YPG Series Keyboards, these pianos offer much more realistic experience for piano playing.

Unlike its 88-key brother, the YPG-235 has a compartment for batteries, which makes it much more mobile and allows you to use the keyboard in places where there is no AC power available (outdoors).

I think the YPG-235 would be a perfect choice for those who haven’t yet decided whether they’re serious about music and just want to get a taste of how it’s like to play keyboard without spending too much money yet getting enough features to stay engaged and interested.

Of course, it’s hard to compare the P-45’s features to what the YPG-535 offers, but for piano playing, you’d definitely be better off with the P-45 and its hammer action keyboard and 64-note polyphony.

I’d definitely recommend the Casio PX-160 over the YGP-535 if primarily you need a keyboard that would feel and sound as close as possible to an acoustic piano.

Even though the DGX-660is a few hundred dollars more expensive than the YPG-535, I decided to include it in this list, because it’s somewhat a unique keyboard.

Just like the YGP-535, the DGX-660 is an 88-key keyboard that offers a whole world of capabilities for playing, learning, music production and just for fun.

The main difference is that in addition to all that the DGX-660 has the GHS (Graded Hammer Standard) action, the superior quality sound delivered by the Pure CFsound engine and  192-note polyphony.

And just these 3 things set the DGX-660 apart from the YPG-535, making it a very versatile instrument perfect not only for music-making, learning, and entertainment but also for realistic and enjoyable piano playing.

I need to do the fix myself... But please know just how finicky this ACF process is! It is bonded by achieving a certain temperature measured in the adhesive, under a specific pressure for a specific duration of time. Worse, this is a conductive adhesive that must be frozen until used, and when frozen, is only properly able to be bonded for 12 months after manufacture. (this is not my opinion, see 3M specs below for details)

My respect! this is the truth, My repair lasted a few month and finally I changed the screen module to a new one, it"s cheap in aliexpress. I can see some improvement and so far so good, 3 years already.0

Awesome and insightful Thank you so much. I don"t own a air soldering gun so I used an old hair dryer. The temperature on the 1500w hair dryer oscillated between 200 and 230F so you would need to fast and careful not to go too far0

Now my problem is the backlight that stopped working. Is there a way to disassemble the display to access the back light and fix it or I need to buy a new complete display?

Hi TqW (?), thanks for the feedback. I had problems about 10 years ago with the flat cables, but not this time. I checked the 5V source direct in the backlight terminals and it was fine. If there is a way to open the display and remove the backlith fixing it will be easy.

Awesome instructions. After taking out all the screws and the board, I didn"t think it was going to work because the connections on the LCD board looked perfect. But I followed the instructions exactly anyway. I have zero experience with repairing electronics but the instructions were so good that I fixed it on the first try. I especially appreciated the detail of setting the screwdriver torque to 1 so as not to strip the casing when putting it all back together. Thanks!

Nice to know you made it! you might need to know this fix will not solve forever the issue, but it really points to the origin and able to repair it, I opened 3 times mine, as the problem went back twice, each time I put little higher flow temperature, and the 3rd time was beginning of last year. good luck!0

Great advice. Thanks! Looking to buy one of these very cheap (because - you guessed it - screen problem!). Before I attempt to fix/replace... is it possible to play as regular piano WITHOUT screen function? My daughter needs a nice keyboard for piano practice... Hate to pass this one up!

sorry for not replying before, the keyboard overall is functional, but not very much "pianist", it compares to CASIO more or less the same, good one to practice a few month, then let her try a real piano, you maybe need to sale it to someone else.0

Yes, you can catch the offer, the overall quality and durability are ok, as it made by YAMAHA, sound quality is decent if the internal speaker still original, or you can just connect to an externally powered speaker system. one thing I feel the keys are little noisy compared to a Casio, the strike sound, maybe the shock absorber is getting old.... Mine one is about 7 years stationary use. Hope this help.1

Thanks for the advice on the anisotropic conductive film cable. My DGX620 LCD was down to half screen and I wanted to avoid the cost of replacement, when it was clearly only a connection issue.

Hi there! glad my note helped in solving the issue, seems it"s a genetic bug of all DGX keyboards (i just can"t call it piano even it sounds good, but the keys stoke feels toy). I do recommend you have a hot gun to finish this kind of job, as the iron slide quickly on the contact ribbon, maybe may become open again in a few days. good luck!