Speedometer Problem

[mboucher70 at hotmail.com]

Sometime back, my car started exhibiting an intermittent 'stuck speedometer'.  It would just stay at zero when being driven.  If I banged on the dashboard, or even sometimes if I drove over a bump, it would immediately come to life and work again.

I've seen, on somebody's website, that this is a known problem with some Audis of my vintage/model (Audi 100, 1990).  The problem is often a bad soldier/bad connection on the circiut board.  The fix is to remove the dashboard and re-soldier.

Because I don't relish the idea of that adventure, including removal of the steering wheel, I'd first like to get opinions on whether something else, possibly more simple to correct, might in fact be the trouble.

Don't know if this adds to the info, but when the speedometer cuts out, the cruise control also shuts off.

(Please forgive my frequent postings here of late...I'm on a mission to take care of all the little things (or not so little) that I've been putting off for a while...And this group is an invaluable resource.  I don't know if any of you remember, but you successfully guided me through troubleshooting, comlete tear apart and repairs of the fuel injection system two years ago).

Once again, thanks for any ideas,

Charles