I just got back a Casio MZ2000 from a friend's house after 3 years..The adapter can not be found.. It is a 16 volt adapter....I tried a 13.5 adapter that works [powered up and functions seem to work on the screen]..My problem is NO sound from the speakers [on board] or thru the outputs...I can hear a trace of sound if I turn the power amp wide open on my keyboard amp, from one of the output jacks[but not the other]..No sound comes from the headphone jack..
There is no sound from the mic input ..

I am pretty sure it isn't the power adapter[a couple volts difference], or could it be?
I had no luck locating an AD-16 adapter..

Donny had a problem with a PSR3000...a phonejack circuit board crack created a similar problem that I have with the MZ....
Any ideas?