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"ghost" sostenuto pedal sound for keys

I have a Technics pcm digital piano pc 200 and noticed last week that when I play on the keys they automatically sustain the sound like the sostenuto pedal is down (which is not nor was at any point while I played). I've tried unplugging/replugging it in,…

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"ghost" sostenuto pedal sound for keys

JeremiahGIRL

JeremiahGIRL
United States

Total Posts: 2
Joined: December 13, 2017

I have a Technics pcm digital piano pc 200 and noticed last week that when I play on the keys they automatically sustain the sound like the sostenuto pedal is down (which is not nor was at any point while I played). I've tried unplugging/replugging it in, turning it on/off again, etc. I noticed that if I press on the sostenuto pedal and harshly take my foot off, the sustaining sounds diminish but do not disappear completely. It makes me think that the wiring somewhere might be pinched or something and probably need to be fixed/adjusted.

Can anyone please tell me how to stop this "ghost" pedal-like sustaining sound for the keys even though I'm not pressing the sustaining pedal down? Thanks

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Posted on December 13, 2017 at 8:20 PM
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1 Reply

jd5live

jd5live
United Kingdom

Total Posts: 288
Joined: June 8, 2014

Re: "ghost" sostenuto pedal sound for keys

Hi and Welcome to the site, Now regarding your "Ghost", the first thing is that the SX-PC200 model appears to be an American model and does not appear in any of the Eupearian listings, however, this is not unknown for manufacturers to produce the same unit under two or more name badges, this may be that the original name is already in use or might have unwanted meaning in a foreign language.
I have looked at the comments you have made and firstly let us look at the things you have tried, When you say you plugged it in again was that the mains supply or the pedal cable at the back of the instrument? next, if you disconnected the pedal cable did the "ghost"/sustain go away and play normally as if you did not use the pedals. If the "ghost" disappears then I would take it that the fault lies in either the cable to the pedal unit or damage to the pedal unit itself. My first line of enquiry would be the pedal cable as these have been a source of trouble before, as they can get trapped when the instrument is moved, even for cleaning at home let alone out on the road of shows etc. I would advise you contact a local electronics engineer who will be able to check the cable out for you.
Wishing you success and a Happy Christmas
Regards John.

Posted on December 14, 2017 at 3:38 PM