I recently had a similar experience, My Hirschmann wasn't working got
a used one from bone yard for $10 different wiring pin-out and circuit
board. The belt was shot. reassembled it and it worked for a few days
then failed. I took it apart and cleaned corrosion off the circuit
board and it worked fine again. It now does nothing. Where can one get
parts ie: the pc board for a Hirschmann antenna?
You already found where to get parts: the boneyard! The switch to
the dash is wired differently in the belt-and-circuit-board unit.
Did you address this?
Becker NA _used_ to repair Hirschmanns, and I even once sweet-talked
them out of a cam for one of mine, but I think that was only because
they decided to get out of the business and thus didn't mind losing a
spare part to me. Unless Walter Odemars is still there and will sell
parts, used ones (and ingenuity) are your only option.
I may be able to repair mine if I had some schematics to work with.
Never having had to work on one of these '86+ units I'm unfamiliar
with the guts. (So far all of ours still work.) But I'd think that
the circuit would be fairly simple, and that component-level testing
(once solder joints had been renewed) would find the problem if one
were inclined to try to repair the thing. Solder joints is the first
place I'd start in older automotive electronics, provided there was
no obvious smoking crater.
-- Jim
