piano

Hi. I have a 1992 Ensoniq KT76 digital piano. It works, but the output volume is very very low, even when the volume fader all the way up (no noise from fader), either through earphones or the 1/4 jack outputs in the back, so i'm thinking something might be wrong with the amplifier inside? Could...

Hey guys, I am relatively new to micro electronics, and am in desperate need of help! I want to bypass the muting circuit in a electronic piano. This involves either activating the relay, or pulling it to ground (BA3-5 Relay, and the highlighted LS1 in the picture below). Please could someone...

I had purchased a cheap Walmart piano to play around with my music creation and have some options other than bass/guitar. I have been learning oscillator circuits and made my own effect pedal, so when the main chip started acting like it got burned out, I wanted to use the key circuit board...

I bought a used Yamaha digital piano P-60. It has the following severe issues: All keys and the control buttons don't work randomly. "Not working" means when I press down a key, no sound comes out from the speakers. It's not about any specific key. It happens to random key. Sometimes all keys...

Hi all, Newbie to both this forum and electronics! I have a somewhat old Casio CDP-100 with 8 keys that went dead recently. All other keys are fine and speakers/power are working perfectly. Schematics here: http://www.warningwillrobinson.com.au/manuals/Casio%20CDP100%20service%20manual.pdf...