> From: sndgroom@...
>
> Thanks Paul for the detailed instructions, really appreciate.
> I was going to do these tests, but before starting I tried to
> slightly tap the chips of the AD/DA section to see if some
> oxidation in the slots was maybe giving the problems. Turning
> it back on, with surprise, my Polaris is now sounding same as
> my chainsaw! :( What I only hear now, is a loud modem-like
> digital sound.
> Before writing back to you with new problems, I tried to see
> what happens but cannot find anything wrong.

You may have nudged a pin onto an oxidized spot. I'd try completely pulling various chips and reseating them, so that you get some good wiping action as you slide the pins in and out. And be very careful that you don't accidentally fold a pin underneath the chip, so it's not actually in the socket.

But I can't give you any better advice because I don't really know what it sounds like. Do you hear the "digital" sound on top of the audio, or no audio at all? How loud is it, compared to a normal audio signal?

--

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...