Never seen that. Maybe the pot for balance is just dirty/broken. Those old radios aren't particularly hard to disassemble, but you may have to just desolder the pot and actually open it to inspect/clean it.
Also... I don't know if any of those Buicks ever had an optional amplifier, but be certain it doesn't have one, as that may be your problem area.
I did have a similar GM radio in a chevy van once that only received a morse code signal, for the letters KM over and over again.
|