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Joined: Jun 2021
Posts: 4
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Eddie N Offline OP
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Joined: Jun 2021
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Was given a Suzuki HP85 88-key digital piano because some of the keys had "fallen." That was an easy fix by just epoxying the offending broken weights back together. Now the real issue...a set of 8 consecutive keys in the middle of the range are now playing at full volume. I've had the contact strip off and cleaned all of the contacts. At some point, soda (or some other high sugar substance) had made its way onto the board, so that has been cleaned off as well. The board is spotless (cleaned with 91% isopropyl) and the contact strip has been cleaned and I even applied new carbon to the contacts. Not only are these 8 playing at full volume, they are "double-clicking" and playing once when depressed, then once more when released! Very frustrating!!! Any ideas, other than "don't fix it, it's not worth it." ??? Any suggestions would be appreciated! Thanks!!

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That this is a Suzuki piano puts me off a bit. But if you insist on fixing it, I'd try swapping out the contacts from the "bad" range and replacing them with contacts from another part of the range.

This is possible on other brands. (Yamahas have 12-key octave contact strips.)
But I don't know whether this is possible for a Suzuki.

If that fixes the formerly offending keys, then replace the contact strip that was originally in that location.

But where can you get parts? Does Suzuki sell parts?
If not, try https://www.fullcompass.com/category/accessories/parts-replacement-service/musical-instrument-parts
If they don't have the parts then give them a call. Sometimes a sharp sales agent will know about substitute parts or alternate suppliers.

If all that fails then maybe it's time for a new piano.

Joined: Jun 2021
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Eddie N Offline OP
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MacMacMac, I insist on fixing everything! That usually gets me into trouble! I had already done the contact swap and had the same result with the same set of keys. Started tracing backwards from the contacts and found that one of the ribbon cables leading from the keybed back to the main board was damaged. Took the cable from the top end (since they are identical) and only plugged in the lower end and that seems to have fixed it. I've got two new cables ordered and will just replace them both.

Just FYI, I had already done some searches just to see about getting replacement parts in case I'd need them and FullCompass doesn't have anything for Suzuki's of that range. Apparently no one else does either. If it wasn't in such good shape, I'd seriously consider just chucking it, but the keys look like they've barely been played and it does have a really nice sound. I fix these up to resell, and this should make a really nice piano for someone to learn on for a pretty reasonable price.


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