Hi everyone! I just received the keyboard that I "won" from a Good Will auction. It "looks" nice on the outside but 9 keys are not working. From the looks of the inside, a fluid apparently was spilled and got onto the circuit boards. There's lots of rust around the circuit board mounting screws. I cleaned the key carbon pads and that fixed all but 4 of the keys. I thought I would perform the Diagnostic Program I found for the CDP-130. Running the two ROM tests does not give me a confirmation chord but just a lower frequency chirp sound, when pressing the B0 key. I was unsuccessful in finding a YouTube video of someone doing the test to hear what the fail sound sounds like.
I was hoping someone could tell me what the pass and fail sound sounds like. And if I get the fail sound, is it worth going further to repair the keyboard? Besides cleaning, is there a way to determine if the carbon key pads are still good?
Thanks for any assistance!
