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Yamaha Digital Piano YPG-625 Keys 'clang' (knocking noise)

Hi... Larry here. My gut tells me that it is felt bushings under the keys AND the front rail felt strip... any ideas???

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: What needs to be removed from my Yamaha YPG-625 to

DO NOT open the case unless you are aware of and comfortable with the fact that you could _destroy_ your piano. Easily.

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

1. Remove the stand if you have one
2. Lay the keyboard upside down (bottom up) on workbench
3. Remove all 90+ screws from the bottom of the chassis, including the 14 inside the speaker compartments
4. Carefully lift up on the bottom case part, taking not to damage the speaker lines
5. Unplug speaker connector and set lower case aside
6. LCD is mounted beneath main logic board
9in the center), my problem lies elsewhere, but competent and cautious service technique should lead you where you need. I would strongly recommend replacing the LCD assembly module, unless you are experienced in LCD repair.

Posted on Nov 08, 2009

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SOURCE: Yamaha CLP-860 Digital Piano Keys Making Noises

The part numbers are only available through the Yamaha Corporation. The Service manual, which is available for purchse (note that this is NOT the owner's manual) will have them.

I repaired mine on my own. I used a sticky foam tape of the correct width (approxiately 3/8 wide) and overlaid one layer directly over the original felt pad. I used a white foam tape like is used for carpet or other indoor needs. If I were doing it again I would probably use something just a little thicker and softer than what I used (appx. 1/16 thick).

Disassembling the Clavinova and removing the entire GH88 keyboard for this work is not hard if you are even moderately handy. I had the entire mechanics of the unit laid bare in 45 minutes with no manual (and not one curse word).

I am going to write up a tutorial on this soon as many people have asked about it.

By th way, I have heard that the factory pads are $100. My solution cost me about $3. Even if I have to do it again in a year, it's a win.

Posted on Feb 06, 2011

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Key not sounding


HI this is probably cause by the rubber contact failing.
Under each key is a rubber strip which acts as a switch against a PCB when the key is pressed.

Clean or Replace the strip and all should hopefully work again.

Part is either WF212202 or WF212402 depending on the location of the faulty note.

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Jul 27, 2016 | Yamaha Music

2 Answers

How do I fix a stuck piano key on a upright home piano


You'll likely need to try removing the keys, so you can see if something is stuck underneath it. That would be my first move.
In order to do this, follow these steps:

The front panel and the keyboard fall are designed to be easily removed for tuning purposes anyway.

To check it out....The front panel likely has a little clip either side near the top on the inside. Just undo these clips and lift the panel out. The keyboard fall should then be easy to lift out too.

There may be a long wooden rail which you need to take out also. Once inside, the keys themselves can be carefully lifted off the central spikes on which they sit.

Remember how you did this so you can get them back in again.

Since your piano is so old and worn, Often times, the wooden rail in front of the keys (just above your knees when you are playing) bows inwards a little due to age and temperature/humidity fluctuations. This then causes the little white front bit of the keys to jam against the wood and you have to physically lift the keys back up to return them.
If this is the problem you will need to take out the keys and shave some wood off the inside of this rail to allow the keys to move up and down freely again.
Or sometimes you may find you have a small object caught under a key or two. Much simpler to remove and free up your keys, if this is your problem..
Hopefully, this is all you will find wrong with your piano.
If all else fails...
I wouldn't attempt to tune your piano by yourself. I would seek out an experienced piano tuner for that.
But it is worth attempting to repair it first before you go that far.
Good luck !!

Feb 26, 2015 | Music

1 Answer

How so I fix a stuck piano key


It would depend on why it's sticking. First thing to check is the key bushing felt, then see if the key has swollen and is rubbing the ajascent key. Past that, you'll need a repairman.

Feb 26, 2015 | Music

1 Answer

HOW TO REPLACE CONTACT STRIP OF YAMAHA CLAVINOVA CVP 92 DIGITAL PIANO ?


Successful repair of my Yamaha Clavinova CLP 880

The principal to replace your contact strip will require one further step to that shown here where the customer has replaced the felts.

When you have the keybed out you will see the contact strip part 220. This is held in place behind the circuit boards. Remove boards, replace strip and reassemble.

It might be worth considering felts whilst you have the keyboard in bits as these wear out.


http://www.beckettsmusic.co.uk/shop/scripts/prodView.asp?idproduct=19108



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Aug 09, 2014 | Yamaha Music

2 Answers

On my new (2nd hand) Yamaha YPP-50 piano, the middle D key is slightly lowered and requires a lot of strength to get sound from it. I'm wondering if its possible to fix? Maybe without going to a Yamaha...


There is a narrow padding strip that runs under all the keys going across. It is made of a type of felt. It is worn or torn in that spot. If you are careful and have some mechanical skill at opening the unit, you will see it, it should be a pretty simple fix to glue the felt back (if torn) or even to glue a small piece of felt in that spot to raise the key, which will allow full movement again so it would feel pretty close to normal again.

Mar 29, 2013 | Music

1 Answer

Roland f-50 First 7 right hand whites keys appear to have lost volume and sound off / flat.


One of the lines in the keyboard scanner has opened up. I have an idea what it might be and it is a nasty problem involving circuit traces that are silver conductive paint on a plastic insulating base that separate from a jumper at each end of the strip that the key contacts are made by conductive rubber pills pressed down by the keys. The contact of the flexible circuit under the keys to the jumper cable can be broken by vibration. I have an EPS7 with the problem and other than replacing the whole contact strip under the keys it really has no easy solution.You should probably have a Roland shop look at this problem. If your unit has this same arrangement it is repairable only by replacing the whole key contact strip.

Jun 08, 2011 | Roland Digital Piano FP4 Black With Stand...

2 Answers

1 key does not spring back when it is pressed and 1 key has a bit of resistance when pushed


The elektrotanya website link proposed in the other solution here did not work for me. So with a similar sticky keys problem on my YDP-113 yamaha digital piano, i just started taking it apart.

I found that the problem was that the sticking keys actually had small cracks at the hinge end. See attached photo for a picture of the hinge end of the key. The cracks are very small and hard to see, but if this is your problem, you will see it in a good light. Having the key apart will also allow you to clean the sides well in case there has been a bubble gum attack or similar problem.

After learning that replacement keys are extremely expensive (like $15 per key...) I decided to move the bad keys to the highest and lowest notes on the keyboard (88 key keyboard so there is some seldom used territory). The center several octaves are now free of sticky keys and this is good enough for now.

The procedure on my YDP-113 was:
1. Remove black screws from back panel of unit to allow top to slide forward and then lift off. Set aside.
2. Roll the roll top all the way closed and then simply lift up to remove. Set aside.
3. Remove the six screws which attach the roll top gear rail (3 screws on each side panel). Set aside the gear rails.
4. Remove 2 screws in the key top bracket, and 1 screw from each end of the key top. "Key top" is my name for the small strip which lies along the top of the keys. If you have an official or better name, please share.
5. Remove the 10 or so large screws and two small screws which hold the keyboard panel down in the unit.The keyboard should now be able to slide a few millimeters toward the back of the unit.
6. Remove 1 screw to take out the power switch panel. The front of it hooks in with a tab, so slide it back and then it will lift out.
7. Careful now. I felt this was the one operation where I had an opportunity to ruin the unit if I would have fumbled: Lift the keyboard up slightly and rest its front 'legs' on the front edge of the case. Careful of small wires to not rip them. Careful of the circuit boards that are underneath the keyboard frame. jeff20112011.jpgThe objective here is to allow the keys to come out toward you so that they can be removed and replaced or swapped. You can kind of see in the cracked key end photo, how the keyboard is up and partially out of the unit.
8. You now can do the actual swapping. To remove a key, pry up very gently in back of the key with a small screwdriver. jeff20112011_0.jpgIt will pop up. Then gently work the key around to free it from the return spring without bending that spring. Replace with a new key or swap will a good working key in a little used position. Note that B and E are interchangeable, also C and F. Some other keys also look like they could interchange though I didn't personally try it.
9. Reassemble in reverse order of disassembly.

Apr 06, 2011 | Yamaha YDP223 Digital Piano

1 Answer

How to remove key from yamaha p80 electronic piano


This pertains to the white keys. If you need to take out a black one, you MUST remove the white ones alongside the black one first.

You push the back end of the key forward (takes a little bit of force) and then lift the back a bit to dis-engage it from the back rail. There is a flat spring under the key. Note how it sets in place.

When re-installing make SURE you get the front of the key engaged with the little lever before attempting to push it forward and down to re-engage the back in the rail.

Apr 18, 2010 | Yamaha Music

1 Answer

I have a CVP-96. when any key is presses and released it makes an audable bump sound when it returns. The return thumps actually intrude on soft music. Silenced with earphones the noise can be heard across...


There is OFTEN a felt strip that the keys come up against at the lip of the case, either near the end of the keys or right where they disappear near their middle. SOMETIMES this strip gets knocked off.

Jan 03, 2010 | Yamaha Full-Size Keyboard

1 Answer

Sprung bass key. Key sticks upwards from the keyboard. How do I fix this? This is on a Casio PX500L player piano.


Not sure of the keys in your synth, but MANY of them have a couple of tangs that come forward from the key and catch on a rail at the front to hold the key from coming up too far. THESE CAN GET BROKEN or slip past the rail if abused.

So check the front of the keys for any signs of something breaking off.

If it has, POSSIBLY you can attach something to replace the broken tangs. Gkluing on the old broken ones will not work. They will soon break off.

Nov 14, 2009 | Casio Music

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