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Clean the keys to keep them smooth - Casio Privia Px330 Px-330 88 Key Digital Piano New

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How do I repair a stuck key on my Samick sxp 501 digital piano?

First determine what the material of your digital piano keys are. Many digital pianos now days have plastic keys but if you have those ebony black and ivory white keys, you need to clean them with extensive care.

1 - Use a damp cloth for cleaning your keys and make them dry.
2 - Use a small amount of liquid soap with a damp cloth.
3 - Clean dirty keys with this cloth. Your grip must be firm but rubbing must be light.
4 - Gently rub keys until they are completely clean.
NB: These steps can be followed for plastic keys but for ivory keys, you would need to get ivory scrapper

Jul 14, 2018 | The Music

1 Answer

Keys keep wavering and changing

Clean the buttons, actually the switches underneath the buttons with contact cleaner, sounds like one is stuck.

Mar 06, 2013 | Suzuki QChord

1 Answer

When i turn the cd player on its reading like a cd is in it but it not

reverse the pin of mains supply and try ,and open close cd tray switch,clean cd tray with smooth brush

Sep 03, 2012 | Stanton C314 Tabletop CD and Mp3 Player

1 Answer

Yamaha W 7 keyboard problem I have a Yamaha W 7 keyboard. Every now and then when I play the note A left of middle C the note keeps replaying or re-hammering while holding the key down. This started a...

under the keyboard there is a switch for each key, try to clean it whit water and a smooth paper. I have Roland keyboards and it happens after playing a lot.
good notes

Feb 07, 2011 | Yamaha Portable Keyboard

2 Answers

My yamaha psr 420 has most of the middle keys not producing any sound when pressed. The others too produce an abnormaly high sound when pressed. Please whats wrong and how do i solve this problem?

Your key contacts have gotten dirty. Two contacts per key are used to sense velocity and if one doesn't work the sound will be full velocity and loud.

The contacts are conductive rubber "pills" in silicone rubber domes that the key presses down onto circuit board traces under the keys. Clean both the "pills" and the black portion of the circuit board GENTLY using ONLY 99% isoprophyl alcohol and QTips. There is a lot of disassembly required and one has to keep track of where the screws go and length and thread type to re-assemble after cleaning. Also great care must be taken to not damage the ribbon cablles connecting the top and bottom halves of the case.

Jan 11, 2011 | Yamaha NP 30 76 Key Lightweight Digital...

1 Answer

Hello, I have a CTK 601 keyboard and some key do not sound, I turn it off and on again, sometimes it works sometimes it does not. This is a set of 7 keys on the right part of it. pls advice

Key contacts are dirty. The contacts are conductive rubber pills that get pressed against circuit traces on a board undder the keys. Clean the rubber pills AND the circuit traces with ONLY 99% isoprophyl alcohol and Q Tips. Be careful of the cables when opening the unit. There is also a slight chance that a cable has come partway loose internally. If you are uncomfortable with opening the unit and keeping track of all the screws, better take it to a repair shop.

Nov 29, 2010 | Casio 76 Key Smartmedia Keyboard

1 Answer

The 17th key on my yamaha psr-150 doesnt work,is it possable to fix it?if so how do you fix it?

You have to dis-assemble it and take the keys off and clean the contacts. They are probably black conductive rubber pills within silicon rubber domes under the keys.

Clean both the pills AND the circuit traces they are pushed against with 99% isoprophyl alcohol. DO ALL the keys while you have it open.

Expect to take out a lot of screws and carefully remove some cables.

USE a compartmented box to keep the screws seperated by length as there are OFTEN several lengths and type of thread and you can mess up when re-installing them.

Dec 16, 2009 | Yamaha Music

1 Answer

A couple of keys don't make a sound ? one never, one intermittently. It is a roland 250s digital piano. It was my brother in law's, and was passed on to me when he passed. He had been known to fix it...

The contacts of most of these use a conductive rubber pill that is pressed against circuit traces with a hard black conductive coating.
These probably need cleaning. One has to disassemble the key switch area and clean both the silicone rubber "pills" and the traces where they contact. Carefully use 91 or 99% isoprophyl alcohol and a Q-Tip to clean these. The black pills are under silicone rubber dome things..
While you have it apart clean ALL of the contacts! You may find a lot of screws to remove. Use a little segmented plastic tray to keep the screws in order and OBSERVE the lengths of each... sometimes they vary and you want to get the correct ones back in the same places.

Jul 28, 2009 | Roland Music

6 Answers

How doI open a Yamaha P120 to fix sticky keys?

I've had the very same problem twice so far. The only solution I figured is to simpy purchase an equivalent key (contact Yamaha service in your country for this) and to replace the broken one. The reason why the key doesn't work smoothly as the other one is not dirt therefore any cleaning won't help. The key is cracked deep in the place where it's attached to its 'axis'. So you'll need to remove all the screws and unmount the cover (it needs a sideshift to open once the screws are removed), be careful with the speaker wires. However you'll need firm moves anyway. Opening is tricky and gets me surprised anytime I do it so you'll need some courage :). Replacing the key is even more tricky. You'll have to remove the broken one by pulling it horizontaly (use some force, it's broken anyway). Placing a new key you'll need to uplift the 'hammer' and then slide a new one. I'm sure you'll figure it out once you see it with your own eyes (it's really hard to decribe but not so hard to do it). Hope you'll do fine. I haven't tried glueing the crack for I doubt it would work for long. Good luck!

Jan 28, 2009 | Yamaha Full-Size Keyboard

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