Some Keys don't sound on my KORG M3 88 KEYS
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Some Keys don't sound on my KORG M3 88 KEYS
Hello everyone, I am having this problem with my M3: I have a Korg M3 with 88 keys purchased almost 2 years ago. The problem is that now some keys (probably 8 or 9) spread out in different places dont sound anymore. I tried resetting and then reloading the preloaded data looking at the operation guide. However, it still did not sound. I also tried testing the cable that goes from the keybed to the Module by disconnecting and connecting again. When I did this, I could play the keys that did not sound before only once then they got mute again. Please help me to find the solution for this. Thanks
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Re: Some Keys don't sound on my KORG M3 88 KEYS
Disconnect cables again then use electrical contact spray cleaner if it works then use it to clean all the necessary connectors.Guitar89 wrote:Hello everyone, I am having this problem with my M3: I have a Korg M3 with 88 keys purchased almost 2 years ago. The problem is that now some keys (probably 8 or 9) spread out in different places dont sound anymore. I tried resetting and then reloading the preloaded data looking at the operation guide. However, it still did not sound. I also tried testing the cable that goes from the keybed to the Module by disconnecting and connecting again. When I did this, I could play the keys that did not sound before only once then they got mute again. Please help me to find the solution for this. Thanks
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- michelkeijzers
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If the 8 or 9 keys are evenly spaced from each other, then it probably is a cable that signals these keys. Reconnect them again (after cleaning).
if the 8 or 9 keys are not evenly spread it might be a problem within these keys (but that's quite a lot). It might be a dirt problem (has it been 2 years without a case in a dusty environment?). In this case clean all key contacts.
On the other hand, if you still have to open the M3, do it both ... unscrewing allt he screws is probably the most work after all.
if the 8 or 9 keys are not evenly spread it might be a problem within these keys (but that's quite a lot). It might be a dirt problem (has it been 2 years without a case in a dusty environment?). In this case clean all key contacts.
On the other hand, if you still have to open the M3, do it both ... unscrewing allt he screws is probably the most work after all.

Developer of the free PCG file managing application for most Korg workstations: PCG Tools, see https://www.kronoshaven.com/pcgtools/
This exact same problem happened to me. I had stored my M-50 for over a year in a case with it lying so that its back (where all the jacks are) was towards the floor. When I took it out to use it, a whole bunch of keys wouldn't sound.
Here's the good news: you probably DON'T have to take it apart, take it in for service, or any other difficult or expensive endeavor. Just strike the keys on either side of each non-working note simultaneously and repeatedly. Eventually, the non-working note will start working - sometimes after just a few strikes of the adjacent notes. In some cases, it may take a couple of dozen strikes. But in my case, every single note started working again from doing this.
And from now on, I will store the keyboard in a flat horizontal position. Its a shame you have to do that, because it takes up more space that way. But you gotta do what you gotta do...
Here's the good news: you probably DON'T have to take it apart, take it in for service, or any other difficult or expensive endeavor. Just strike the keys on either side of each non-working note simultaneously and repeatedly. Eventually, the non-working note will start working - sometimes after just a few strikes of the adjacent notes. In some cases, it may take a couple of dozen strikes. But in my case, every single note started working again from doing this.
And from now on, I will store the keyboard in a flat horizontal position. Its a shame you have to do that, because it takes up more space that way. But you gotta do what you gotta do...
- philipgruver
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Hey that really works! I had been storing my M3 in the box on it's back for a few months and when I set it up today I also found that several keys did not sound. So I tried your technique of simultaneously striking the keys on either side of the non-working key and it and now all the keys work. Does anyone know why this works?
Hmm, puzzling. Thinking aloud rather than offering any definitive explanation, one might imagine it shouldn't be dust if it's been kept in its box. However, if the box has not been sealed completely, the finest dust particles will still find their way in. Striking the keys has probably shaken some accumulated dust off the contacts. Not sure how close to the M3 the M1 keybed is, but having seen the M1 key contacts, laying that board on its back places it in just about the most vulnerable position for dust to accumulate on those contacts. The alternative is contact oxidation being cleaned off by the repeated striking, but then that would also happen with repeatedly striking only the affected key. Striking several keys simultaneously sets up significantly more vibration of the keybed than one key on its own, which might favour the dust hypothesis.
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