Yamaha YPG Keyboard Screen Display Problem!

by Mike H
(PA)

Yamaha YPG Display Problem Close

Yamaha YPG Display Problem Close

Yamaha YPG Display Problem Close
Yamaha YPG Display Problem Far

I have a Yamaha YPG-625 Keyboard and I have only used it for maybe 12 hours (I unplug it when not in use) in the last 4 years I bought it(12/23/2006). Now the Screen Display only shows half (see attached pictures). How do I get this fixed or what is Yamaha's warranty?

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Jul 08, 2016
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Yamaha half screen issue
by: Anonymous

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.

Apr 19, 2016
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Thank you!
by: David Brown

Thank you for suggesting to check the contrast! I totally forgot about that adjustment. The display looks great now.

Jan 09, 2016
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Attempted repair
by: FixthingsDan

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.

Diagnosis (in my opinion): I believe the end of the display cable is the problem and not the double crimped portion of the ribbon.

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.

Dec 11, 2015
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psr s 650 display issue
by: Anonymous

also i have a same problem with my key boards. display issue.it not working some time and single side working only...

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.

actually i have fed up with yamaha key boards many times..

thank you.
pradeep atthanayaka
sri lanak

Oct 26, 2015
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ypg 625 ribbon cable
by: gswinney1@yahoo.com

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!!!!

Sep 07, 2015
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Display
by: Anonymous

Rating for this piano is very high? Why.
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.
Now - problem with display screen.
I own Kurzweil 152 grand piano over 18 years - no single problem. Perfect made piano.
In me personal opinion - NO MORE YAMAHA.
Poor, unreliable piano.
Mark Lejzorowicz

Jul 02, 2015
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I have the display issue too
by: J Emery

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.

Jan 22, 2015
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YPG-625 screen
by: BobT

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!

Dec 19, 2014
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Works!
by: Anonymous

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.

Two solders was easy with two people and patience on a floor and I have never really soldered anything this precise (using a fine-tip solder no less).

Make sure not to rip any of the wires and do it with another person if you are worried; it will be fine.

Nov 20, 2014
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Yamaha DGX-620 tarnish on ribbon cable!
by: Dan

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. :)

Oct 31, 2014
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Display problem may be contrast knob or tarnish on ribbon cable
by: JamieRI

Before purchasing a replacement LCD, try a couple of things first:

1) Adjust the contrast knob on the back to see if you can make the image usable.

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)

a) watch the youtube video and disassemble the unit
b) unplug the LCD flextail from the mainboard, scrub the shiny contacts on the end of the tail with a pencil eraser.
c) wipe all eraser particles off
d) re-insert and test
Note: a second flex tail runs between the LCD controller board and the LCD glass. This must also be clean.

Yamaha chose to use solder plate on their connectors over gold plate, and this tarnishes over time.

If cleaning both contacts fail to fix it, then order a replacement LCD.

Aug 04, 2014
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Very disappointed
by: whelehan k

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.

Jun 15, 2014
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Agree with June 11, 2014 - From original author of this solution
by: Mike H

Anonymous posted:
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"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.

When replacing with the new part, I was able to install and connect the wire with no crimp. It just did a nice modius strip kind of curve."
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That is also exactly what I did and 4 years later the LCD has not had this issue again.

Jun 11, 2014
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finally!!
by: Anonymous

I had posted this to another Yamaha forum, but thought it most appropriate here.

I had this same problem, which was only solved by replacing the LCD screen (ordered from www.partsimple.com part #Yamaha WU967500).

There's a youtube video out there that really helps with the installation of the new part.
https://www.youtube.com/watch?v=WZBqezQAp2M

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.

When replacing with the new part, I was able to install and connect the wire with no crimp. It just did a nice modius strip kind of curve.

May 05, 2014
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LCD
by: Anonymous

Hi,I own a ypg 625/ dgx 620. Contact me you need help. I can help you dis- and reassmemble your keyboards.

unelteed@hotmail.com

May 05, 2014
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LCD
by: Anonymous

HI, thunmbs up guys... I have the same problem with my lcd. Does anyone perhaps know where i could buy a new LCD in Germany.


Mar 12, 2014
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display problem
by: Anonymous

Hi
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.

Feb 21, 2014
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mine too
by: Anonymous

This happened to mine too! This should be a recall and they should send us free screens.

Jan 03, 2014
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I have same problem
by: AGS

Thanks for including the image... it's exactly what my screen looks like after 2 years and many hours of play.

And thanks for including the fix so I know what's involved (and that I don't want to attempt it).

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.

Jun 09, 2013
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Same problem with mine
by: Kelly

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?

Mar 13, 2012
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DISPLAY PROBLEM
by: Anonymous

I Want PSR 3000 Keyboard new display and how many cost.

Dec 28, 2010
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I fixed this now by Replacing the LCD
by: Mike H

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).

ALSO:

- 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).

- Observe appropriate anti-static precautions. It should go without saying that this is an electronic repair, and dangerous voltages may exist inside the case.

Steps to Replace the LCD:

1. I ordered a new LCD from Yamaha. $169 + 25%discount if you call and ask + shipping.

2. Remove from the stand if you have one (4 screws).
3. Lay the keyboard upside down on it's face (put on cloth or towel so no scratches).
4. Remove ALL 102 screws from the bottom of the chassis, including the 14 inside the speaker compartments
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
6. LCD is mounted beneath main logic board.
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).
8. Remove the 4 screws from the main board.
9. Carefully lay the motherboard over to the right.
10. Remove the 4 screws to the LCD.
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).
12. Unsolder this wire from the old LCD. Make sure you notice which wire is + and which is connected to -.
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)
14. Plug the new LCD power wires back into the white power connector on the board.
15. Replace 4 LCD Screws.
16. Replace Motherboard and all ribbon cables.
17. Replace 4 motherboard screws.
18. Replace speaker wire connection
19. Replace all 102 screws
20. Replace 4 screws on stand.


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