Thanks for responding, Duncan. In vintage audio, nothing seems wacky….
The symptoms are the same whether I use alkie batteries in the battery tray or the PS. It's almost like some discrete component responsible for voltage management (hoping it's something replaceable) finally gave up the ghost. It might be time to take a peek inside the unit.
I recently got a different player with a PS (correct polarity). Same symptoms. I'll take a peek at the DC jack at any rate, given your comments.
If the D-12 is anything like the D-11, it's not a simple task to get to the component side of the board (unlike the D-101). Even the trim pots are adjusted through the backside.
Thanks again!!
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