[V8] Instrument cluster fix

[Leo]

Indeed that is the only problem.
The heat dries out the plastic of the plugs

Leo

-----Mensaje original-----
De: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] En nombre de
urq
Enviado el: Friday, April 09, 2010 11:14 AM
Para: v8 at audifans.com
Asunto: Re: [V8] Instrument cluster fix

Your gauge panel must be different than the one on the US cars ... all of
the boards and gauges slide together with connectors.  There are a couple
small cables that attach the two halves of the board attached to the front
of the gauge panel, and to connect the small board that holds the dimmer,
but these have connectors that are easily removed.  

I've even found it possible to disassemble and reassemble the instruments
themselves ... the speedo/odo specifically.  

It is the modularity of the design that was its shortfall ... over time the
connectors and pins go bad ...

Steve Buchholz

-----Original Message-----

How did you remove the board under the gauges, where there are wires 
passing through just next to the tach gauge..?
I ended up having to cut them up and rewiring each wire since i 
wasn't able to desolder all of them at the same time from the board so 
it would come off. What a pain!



>----Alkuperäinen viesti----

>Lähettäjä: Armanmik at earthlink.net

>Päivämäärä: 08.04.2010 18:29

>Vastaanottaja: <v8 at audifans.com>

>Aihe: [V8] Instrument cluster fix

>

>

> From 2005 posting:

>

>

>> I had similar very symptoms on my V8 - fuel and temp gauges dropped 
sporadically to zero, came

>> back with a whack on the dash pads. The pc traces were fine, the 
problem was cold solder joints

>> at the pins that the interboard ribbon cables connect to.

>> 

>> These are assembled by "wave soldering" - does the whole pc board at 
one pass.

>> 

>> Problem is that if there's enough heat to solder the big parts (high 
thermal mass), it is too

>> much for the ICs and other smaller parts and they get toasted.

>> 

>> I've seen this on other electronics equipment - *exactly* the same 
thing, cold solder joints on

>> the large pin connectors - PC power supplies are good for that.

>> 

>> Cure is remove the cluster, take the boards off one at a time, and 
with a fine pencil iron,

>> re-solder the bases of the interboard connection pins one by one. 
Put it all back together (now

>> is also THE time to change all the burned out dash lights) and 
dollars to donuts your problems

>> will be cured. I found four bad ones and some more suspect ones. You 
will be able to wiggle (as

>> opposed to flex) the pins slightly in the pc board if the solder 
joint is bad. Also, a cold

>> solder joint is "grainy" or "pebbly" instead of smooth and shiny. 
Use a magnifying glass.

>> 

>> Use some contact enhancer on re-assembly just as extra insurance.

>> 

>> I did mine almost two years (now SEVEN years!!!) ago, and that part 
(at least) has worked flawlessly since.

>> 

>> Best Regards,

>> 

>> Mike Arman V8Q, lights, blinks, starts, runs (be afraid . . . )

>

>

>

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>


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