[s-cars] Instrument Cluster Not Lighting Up

[calvinlc at earthlink.net]

I agree, first reverse what you did and see if that solves it.  If it does
then look at the circuit and figure out why and what work-around you need to
do to get rid of the problem.
--Calvin


-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com]On Behalf Of Mark Strangways
Sent: Wednesday, April 27, 2005 9:47 PM
To: Tony Curran; S-Car-List at Audifans.Com
Subject: Re: [s-cars] Instrument Cluster Not Lighting Up


I would first start by undoing what you did.
Then see if things come back.

>From my travels thru Audi wiring, I know they use transistors at various
locations to control the lamp dimming. The dimmer will send it's bias
voltage to these transistors and they in turn control the load.

I would be looking at the voltage that come off the dimmer, maybe it got
smoked ?
If you smoked a transistor, then it would be isolated to that area.

For instance, the secondary cluster has it's own transistor for it's
backlight bulbs.
Not much for help, but may give you some place to start.

Mark
----- Original Message -----
From: "Tony Curran" <tony.curran at sympatico.ca>
To: "S-Car-List at Audifans.Com" <s-car-list at audifans.com>
Sent: Wednesday, April 27, 2005 9:20 PM
Subject: [s-cars] Instrument Cluster Not Lighting Up


> Tonight I was wiring in a digital pressure gauge and hit a problem after
> instal was complete. When I turned on ignition switch all seemed well.
> Warning lights came up and climate control illuminated. But when I turned
> on
> the headlights, the IC didn't light up and the lights on the climate
> control
> went out.
>
> I took the 12V for the digital gauge from the cigarette lighter harness
> and
> wired in a switch. On Canadian spec S6 with Delta radio the cigerette
> lighter socket is just south of the gear stick - different to at least on
> US
> spec S6.
>
> The IC fuse is OK.
>
> Any thoughts on what is casuing the problem? I did stick my hand in behind
> the climate control unit to reach in for a nut I had dropped in . Could I
> have dislodged a connector or something?
>
> TIA
>
> Tony
> 96 S6
>
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