Instrument Cluster Problems: 1990 Audi 100

[Einhorn Hofmann]

Hi all,

I'm looking for a lead on anyone that might have a used instrument cluster
for a 1990 Audi 100 for sale.  From left to right, it has coolant
temperature, tachometer, speedometer, gas, oil temperature, oil pressure,
voltage.  It doesn't have a trip computer, but it has the auto-check that
usually gives "OK" after starting, but will warn for brake pad wear, low
gas or coolant, etc..

After changing out bulbs, it was working for a few days, then everything
except the tachometer, auto-check, and the bulbs went dead.  I've pulled it
apart thinking that the only thing all of those gauges could have in common
is the ground, but just haven't been able to find a bad/cracked solder on
the board.

Thanks for any suggestions,

MC