Casio Music - Recent Questions, Troubleshooting & Support


Could be an open internal fuse or defective power switch

Casio Music | Answered on Nov 09, 2017


I found this! https://www.manualslib.com/manual/268824/Casio-Ctk-573.html

Casio Music | Answered on Oct 29, 2017


5 videos here.

this one shows, you remove the upper section to gain access.
https://www.youtube.com/watch?v=vX_CzYD6w94


Replace Keys on Casio LK 30 Google Search

Casio LK30 Note... | Answered on Oct 06, 2017


You can't add songs to the LK-30 song bank. I suspect you would need to take apart the keyboard and replace the ROM (read-only memory) chip to get a different song collection.

Most Casio electronic instrument manuals are available from http://support.casio.com/en/manual/manual.php?cid=008 . However, I found the LK-30 manual at manualslib.com: https://www.manualslib.com/manual/358460/Casio-Lk-30.html .

I wish that I had better news for you.

Cindy Wells

Casio Music | Answered on Sep 30, 2017


What model? Diodes are either burned up (but you would see the ends still present) or missing because they aren't applicable to that model. It's more likely the rubber pads under the keys need to be replaced

Casio Music | Answered on Sep 27, 2017


To rule out the power supply, or the related power supply circuitry - try it with batteries. If the problem goes away, you can try another 9v power supply with the same ma current (or higher) just make sure it is the correct polarity.

Casio Music | Answered on Sep 27, 2017


You can find that here free download https://www.manualslib.com/products/Casio-Ctk-519-692441.html

Casio Music | Answered on Sep 27, 2017


I assume you mean through its own speakers.
(If you are running through an amp, make sure everything is powered from the same power point)

If the hum is coming from the unit but not through the speakers, you have a more serious problem.


If you are not using the supplied power adapter that could be the problem.

If you are using the mic input, the mic lead could be the problem, or it might be passing close to the power adapter or some other hum source. try a different lead, and make sure the lead is well away from everything.

Some other device might be too close. Try moving things around, or a new location.

Casio Music | Answered on Sep 20, 2017


if you find one thru a google search you can download and print it Google

Casio Music | Answered on Sep 15, 2017


Unplug while unit is on. Then press and hold power button for about a minute. Replug back in see if that does trick. If not call company for a hidden code if available.

Casio Music | Answered on Aug 31, 2017

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