Porsche Repair: 1981 Porsche 928, printed circuit board, gauge cluster


Question
The guages from the Tach. to the left won't work. Apon replacing the printed circuit board I discovered that the instrument carrier was broken where the pins wrap over it, on the left and right. I've glued a piece of plastic in place and it seems to hold the pins fine when I conect them, however the guages still do now work, I can get them to jump a little by wiggling the connecter on the pins, but they only jump, they do not respond correctly and the Tach won't move at all is there anything else you might suggest could be wrong with the guages?

Answer
Hi William,

Without a picture of your gauge cluster, I'm working a bit in the dark...since I've never been lucky enough to own or even sit in a 928.  Usually I only see them screaming past me on the freeway!

So, I'll ask a few questions and we'll get to the bottom of this...

--did you replace the circuit board to correct this problem or is this problem the result of replacing the circuit board?
--which gauges fall to the left of your tach?
--have you re-verified the connector is bringing a good 12v and a good ground in it's wires?
--are you saying the connector supplies power to the whole cluster but only the right side is functioning?

Let me know a bit more, OK?

Dave