Re: Need help on repairing interittent 1991 200 speedo cluster

["Fred Munro" <munrof@isys.ca>]

Peter;

    I have fixed this problem on my '91 200q. A copy of the TSB is at
http://www.geocities.com/MotorCity/5614/
    In my case, the solder joints connecting the two green terminal blocks
to the circuit board were bad. They had already been resoldered, probably
under this TSB, and looked OK, but a process of elimination led me to
resolder them and the problem was solved. It was only then, of course, that
I found the TSB, thanks to a post by Dave Conner.
    The main board (the one with the lights in it) is the board that has the
problem. The swing-away board you describe is the autocheck computer board.
If you are having autocheck problems, Stabilant 22 on the board connectors
usually works wonders.
    My problem was not with a jerky speedo, but with dash/turn signal/ high
beam indicator lights "crossing circuits".

HTH

Fred Munro
'91 200q  264k km
-----Original Message-----
From: Peter Schulz <schulz@iatcmail.ed.ray.com>
To: 200 <200q20v@pdikeman.ne.mediaone.net>; quattro
<quattro@coimbra.ans.net>; royal <Paul_Royal@idx.com>; iand
<iduff@charter.com>
Date: Monday, December 21, 1998 10:53 AM
Subject: Need help on repairing interittent 1991 200 speedo cluster


>Folks:
>
>Has anyone saved detailed instructions on the fix to the 100/200
>intermittent speedo cluster problem?
>
>Besides being occasionally "jerky" as if a speedo cable was bent
>or needed lubrication, the autocheck computer "blanks out',
>I can use the multi function computer, and the left and right
>turn signals and the high beam indicator are illuminated, and
>the digital clock fades out.
>
>I perused Chris Miller and Scott M.'s web pages, and searched
>the Qlist archives, but didn't get alot of details.
>
>I have already remove the cluster by taking off the top cover
>on the steering column (two phips screws) and the trim panel
>beneath cluster (4 philips screws).  Working the cluster out
>while disconnecting the leads to it was a total pain.
>
>Now that I have it out, I have a few questions.  There are four
>holes for bulbs above the oil temp and voltage gauges.  Three
>of them had leads colored black, yellow and blue.  What are they
>for?
>
>The cluster of bulbs beneath the "OK" computer have bodies colored
>black, pink and blue.  What is the significance? Wher do I need to
>install
>a bulb for the "autocheck" system? Is it the location with the bulb
>hole taped over?
>
>And finally, when I put the cluster face down, remove two philips
>screws from the back, and swing down the rear panel, I am greeted
>by a pcb board which is atached to the swing away panel, and connects
>through two connectors to the panel to which the gauges are attached.
>
>Which pcb board has the ground problem, and which side of the connectors
>
>should I reflow the solder with my Weller soldering station?
>
>Any tips would be appreciated!!!
>
>Does anyone have the TSB that they could email or fax me?
>
>-Peter Schulz
>1991 TQW
>1990 CQ
>schulz@res.ray.com
>
>
>