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How do I fix a key that wont play on my Roland D-20

When I press the D key it wont play but sometimes it will play milliseconds after its pushed.

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Ugh! the only way to fix this is to dismantle your D-20 to get to the bottom of the key bed. There are rubberized strips under the keys that have pads which make contact (hence, key contacts) in several places with the actual keys. The strips are attached with rubber nibs that snap into place on the base of the key bed. The reason for the lack of sound and/or the millisecond delay is a speck of dust that somehow made its way onto the contact for that key. If you decide to take this task on by yourself, make sure you clean the rubber strips (yeah I'd do all of them while you're in there) completely with canned air and contact cleaner in a dust free environment, and be sure to attach the rubber strips completely to make a dust-free barrier. Once you see the strips, the explanation will make sense. If this sounds overwhelming, take the board to a repair shop and their tech will fix this for you, as they see this issue all the time with velocity-sensitive keyboards. Good Luck!

Posted on Dec 06, 2017


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Posted on Jan 02, 2017


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Highest intensity in some keys even when I play it with slow push

DUST on sensors! If you have steady hand, you can remove the entire keyboard. Using a computer vacuum cleaner, clean the sensors on the instrument, then replace the keyboard carefully. Or, take it to a technician to have the keyboard sensors cleaned.

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The repair I completed was about four of five years ago. I searched the internet and found great instructions to print out. Unfortunately, I can't find them again. HOWEVER, I did find this video: Roland Keyboard Repair. It shows you the hardest thing about the repair - how to take the cover(s) off to get to the keys! The video is not as detailed as the instructions I used before - but pretty good. The parts cost me about $25.

Unfortunately (for me) I have yet another key to fix now. This time I will take pictures and notes and update here with my results. It might take several weeks though (I'm trying to finish a big school project). In the mean time, try the video. I don't recommend trying super-glue like the video says, but sometimes finding parts is difficult, so I guess that might be an option if you couldn't get the parts easily. I just don't think a weight repaired with super glue will last very long.

Here are a few suggestions to find the parts you will need:
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Sometimes, you can simply tape a small piece of cardboard, like from a cereal box, onto the bottom of the key where it pushed on the bubble, and this can fix the problem.

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