Problem with Proton D1200: any ideas?

[dougman2011]

Hello folks:

I have a Proton D1200 inherited from my father which has worked great for a long time, but out of nowhere this week the right VU meter went dark and no sound comes out of either channel.

I generally keep it plugged in and on indefinitely (probably stupid of me). I'm a musician and love the great sound but unfortunately don't know much about fixing audio equipment, especially oldschool hifi stuff like this.

My questions are:

1. From what I mentioned, might anyone have a guess as to what's wrong with it? The right VU meter is dark and nonfunctional, the left one seems to be okay, or at least lights up. There is no sound coming out, no response to input even on the meter. Disassembling the box, there is no visible damage (i.e. rust, burnout), but there is a good bit of dust. Can't see anything obviously broken. When I turn on the power, there is a slight electrical "twang" sound, which I think comes from the right hand power supply on the box. The sound doesn't reoccur unless I leave it off again for a little bit and then turn it back on (repeated on-offs don't elicit the twang).

2. Is this fixable, and what level of expertise will it need? Would I even be able to find the parts? It'd sure be nice to keep this puppy alive.

Thanks very much,

Doug

[pinkmouse]

Duplicate thread closed.