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Showing results for tags 'ct460'.
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Hello, I am trying to repair a Casio CT-460 for a friend. I am equipped with an multimeter and a home made audio probe. The keyboard is making very little noise that is also buried under static. I can hear the tones play faintly when I press a key. This also applies to the 'Demo" track that plays when the demo key is pressed. I also cannot find any point on any of the boards that doesn't have a layer of static. I've probed pretty much everywhere (including places I shouldn't have) though there are placed where the tone is much louder. Specifically on the D23C module on the M5257 Board shown below. I had the idea to probe all the conductors in the Key to Board ribbon shown below, but the tones I got out of there were strange and nothing like what the speaker outputs. I've removed a speaker because I kept having to flip it with the board and that got annoying. I'll put it back on when/if the keyboard is repaired, but I didn't want the loose wires to confuse anyone. If anyone has any guesses as to what should be checked/replaced, any suggestions would be appreciated! Underside of the Full Keyboard: M4254 Board: M5257 Board:
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I have an old ct 460 keyboard and it is recently causing me problems. When I press the "D" key, instead of playing a D, it plays a little preset song. When I press the D again, it stops it. I want to get rid of this memory problem. I just want D to work normally. Any ideas on how to get rid of this issue? Thanks, Amy