I'll chime in a year later. I believe these had a battery for station memory backup as well as panel stuff. I wanna say a nicad battery somewhere near the front panel on the inside. At least something to check out.
There is an IC chip that handles source selection. You could get lucky and find a bad solder joint. The chip itself may have a replacement. Look for the ID and search 'net for the pin outs. Then find equivalent chip with same pin outs.
is the ic just for the front panel ?
if a free manual is found i can have a look with you .
I haven't opened mine up, but from what I read somewhere, it's near the front and I'd imagine fairly easy to get to, considering it's a replaceable item. GLAfter selling my TX-108 sometime back, I bought another one for cheap with the same problem of no sound and no operation of the front panel. You mentioned there may be a nicad battery somewhere. If you have found anything more about this problem with the TX-108, I would appreciate anything you know! BTW, mine isn't scheduled to arrive until for another five days.....maybe the problem is so small it won't be big thing at all. Thanks!
I haven't pulled up the Service Manual yet, so I don't know. Maybe SoCal Sam knows that answer to that off the top of his head....