Keyboard powers up, no sound


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So, I bought this used M-Audio ProKeys 88 from some guy for $50, and when I first got it it played just fine. Only one problem: one of the keys was dead, and not just any, one in the center. So yesterday I took it apart, cleaned the contacts, put it back together... aaaaaaand no sound. Interestingly, the demo still works, but nothing happens when I press the keys. While I was working on it a jumper(?) fell out the pcb where the i/o was, but I managed to figure out where it came from and soldered a piece of wire in its place. Still, no sound. Really stumped on this one. There are two interchangeable ribbon cables; I have tried switching them around, but to no avail. Unfortunately, M-Audio has removed ProKeys entirely from their website, so no tech support. Also nothing really online that helps.
 
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happyrat1

Destroyer of Eardrums!!!
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Can't help you directly with your problem but this is why when disassembling a new piece of equipment you haven't hacked before, you always mark all the connectors and take a lot of pics with your phone.

At this point it's 50/50 whether or not you've fried it entirely by swapping the cables.

I wish you godspeed to Valhalla brother :D :D :D

Gary ;)
 
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Yeah probably, but there wasn't many cables and most of them only went in to one slot, one way, and I was too lazy to get a marker and mark them or whatever.
 

happyrat1

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Chalk it up to a life lesson friend. :)

Be thankful it was only a $50 boat anchor to begin with. :)


Gary ;)
 
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