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Posted on Jan 30, 2013
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Do they make replacement speakers for the Korg SP-250. I have one not working

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Fred Yearian

  • 5603 Answers
  • Posted on Mar 22, 2011

SOURCE: KORG SP-250. Keyboard powers

There is probably a cable loose that connects the keyboard itself to the processor... OR the key contacts have been contaminated by spilled liquid. The keys are scanned as a matrix. The contacts will be a conductive rubber pressed against circuit board traces. Clean contact "pills" and the circuit traces with ONLY 99% isoprophyl alcohol.
This is NOT for the unskilled to attempt a DIY other than carefully opening and looking for a cable that has come loose.

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Anonymous

  • 539 Answers
  • Posted on Apr 08, 2012

SOURCE: korg sp-250 randomly changes the voicing

When was the last time you changed the batteries? You may have gotten a pack of expired batteries the last time you replaced them. I suggest changing batteries.Jimmy

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There is probably a cable loose that connects the keyboard itself to the processor... OR the key contacts have been contaminated by spilled liquid. The keys are scanned as a matrix. The contacts will be a conductive rubber pressed against circuit board traces. Clean contact "pills" and the circuit traces with ONLY 99% isoprophyl alcohol.
This is NOT for the unskilled to attempt a DIY other than carefully opening and looking for a cable that has come loose.
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1. plug in some headphones into the jack.
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If #1 & #2 fail, but #3 passes, your setting are set so that there is no sound, but the keybourd still recognizes input.

If all three fail, the keys do not send a signal at all, you should replace the keyboard.
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