What can I do to fix this? What is the cause?
First things to check, power supply unit, is it the original or the one that has previously worked - if yes check the output voltage with a meter to ensure this is working.
When you plug this into the piano if you wobble the plug does the socket feel loose? You may even get a tempoary connection, if you do or it feels loose the socket needs repairing.
If this all checks out ok the next step is move inside the piano, you will need to know a bit about electronics to proceed to this step.
Report back and I may be able to help further.
SOURCE: I have a Technics digital piano with 1 dead key.
If your piano is the same as mine, there is a rubber membrane with contacts imbedded in it that sits on top of a circuit board. The key pushes the contact in the membrane onto the contact causing a note on. What happens is the cylindrical part of the membrane that holds the contact can get torn and the contact will no longer travel in a straight line to trigger the note. The entire membrane strip has to be replaced. The strip on my piano was discontinued and I had to manufacture one from an extra Roland membrane that had some bad contacts in it. You will have to contact Technicsat www2.panasonic.com/webapp/wcs/stores/servlet/PNAEndecaSearchCmd for support. If you don't feel comfortable tackling the repair yourself consult a good piano tuner/repair place in your area for advice.
SOURCE: Need help connecting Korg C-303 (Concert Piano)
Assuming the C-303 has a MIDI out, connect a MIDI cable from the MIDI output of the C-303 to the MIDI input of the symphony module.
Connect two audio cables (mono 1/4 inch) from the symphony module to a suitable audio amplification system OR possibly into auxilary audio input jacks of the C-303, if they exist.
I have a Symphony module but not the piano you have and I have mine connected to a Yamaha organ.
SOURCE: korg C-15 S concert piano
ik heb 20 jaar geleden een korg c 15 piano gekocht voor 5000 nederlandse guldens.
we zijn tot nu toe nog steeds tevreden met de piano.
sinds een paar dagen wil hij niet meer hard spelen ,je hoort hem alleen nog maar in de verte .
alles is goed aangesloten ,schuifje staat op zijn hardst en er staat ook stroom op ,want het lichtje brand .
kan iemand mij vertellen wat ik daar aan kan doen ,ik wil hem nog niet kwijt ,misschien is het maar een kleinigheid.
vriendelijke groet
mevr v haasteren
SOURCE: piano nova digital piano wont switch on
Verify the cord from the adapter to the piano is not broken (common occurance) using a voltmeter at the connector.
Then verify the connnector is seated in the piano.
SOURCE: where can I buy a power board for a Sp200 Korg
Buying a power supply can be expensive and hard to get.
A better plan is to repair the board unless it is totally smoked. Most components are available through Digikey.com or Mouser,com,
Search google for "Korg repair parts" for comlete module if not repairable.
However, it is likely that if your piano isn't turning on, either your connection is bust or your AC power adapter is broken. You can purchase a replacement relatively cheaply. https://www.thomann.de/gb/korg_netzteil_ka_320.htm
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