Question about Korg SP-250

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KORG SP-250. Keyboard powers up, you can change all selections, five or six random notes sound, but the other keys produce no sound at all.

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  • Korg Master
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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.

Posted on Mar 22, 2011

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It's about hardwares.
If dead keys are the same notes(C2-C3-C4 or E2-E3-E5 etc),its electronic parts problem.
If dead keys are random(D1-F1-G3-B5 etc),chances are :
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How to change a fuse on a korg Sp-250


There is no fuse inside SP250. If the unit can't power ON,there maybe damage to the adapter,adapter cord/connector,or broken fuse inside the adapter.
If adapter is in good condition, then the damage is inside SP250.
The possibilities are on regulator section.
Check all parts in this section (figure 1).
Also maybe there is a broken soldering joints at DC input socket.
change-fuse-korg-sp-250-fuxmm42irvf2p03kxwfdv02c-3-0.jpg change-fuse-korg-sp-250-fuxmm42irvf2p03kxwfdv02c-3-1.jpgchange-fuse-korg-sp-250-fuxmm42irvf2p03kxwfdv02c-3-3.jpg

Jun 01, 2014 | Korg SP-250

1 Answer

While using korg m50 editor using usb data cable there is no sound from my lap.the sound is only from my head phone connected to my keyboard directly?


Are you connecting to the laptop and using it as a midi controller? You can record midi notes from the keyboard and send them to your laptop via USB using any midi sequencer program (reason, logic, etc). Create a midi track, select the input of that track as your keyboard, then hit record to play some midi notes. To hear what you record, you have to set the output of the midi track to whatever midi sounds or instrunents you have installed on your laptop.

If you are trying to record the actual audio sound the keyboard makes, use an audio program such as cubase, sonar, audacity, pro-tools, and either mic the keyboard, or connect one of the other audio outputs (1/4" TRS) to an audio input on your DAW, and record an audio track that way (as opposed to a midi track).

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1 Answer

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

Apr 08, 2012 | Korg SP-250

1 Answer

Sp250 right outout seems to have broken and as a result there is no sound coming from the speakers on the keyboard or through the PA. If we use the left output through the PA - it works, Could you advise...


Check if headphone jack also has right channel dead... If headphones work on both channels, switch contacts on headphone jack MIGHT be the problem.

Jan 17, 2011 | Korg SP-250

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