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Join Date: Apr 2009
Location: Israel
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Pod instrumental panel question

Hi Guys

Finally, me and my dad just removed the dash for restoration
one of the things we want to do while the dash is removed is to fix the Mileage counters that stopped working.
We havent opend the instrumental panel to check if the plastic gear is broken but we have noticed that some pins in the printed plate are not in place (see attached pictures)

We dont know what the influence can be but it looks that since they been bent - they didnt do anything...maybe it can be related to the mileage counters, since when I pressed on the mileage counter "reset" button (before dash removal) I saw some movement on the bottom mileage counter...
Do you have any idea what those bended pins do?




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Porsche 928S 4.7L 1980 European redhead
Old 04-06-2010, 05:57 AM
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You can take an ohm meter and follow those connections, actually you can almost see where the go. Looks like some damaged contacts for sure.
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1986 928S
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Previously owned: 67 Vette, 427 L88 Stingray, 74 De Tomaso Pantera L. Latest addition: 2000 BMW Z3 Roadster
Old 04-06-2010, 06:31 AM
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You can try and repair the bends with some glue, but I got lot's of intermittent issues with that. I ended up buying a new PCB (Printed Circuit Board) for about $100, which resolved the issues.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior
1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
Old 04-06-2010, 07:26 AM
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Good info so far...
as Leo suggests try and bend the bent tabs back maybe use a little super glue to hold down, be careful clamping anything to the board where the tabs are, it could be brittle. Also, make sure to clean the female plug.

Most likely the odo gear is bad/denigrated. This will cause no miles to accumulate on the counter and a non-functioning trip counter. The trip counter uses a solenoid when pushing the button to actuate the gear mechanism to reset, they go bad and/or the odo gear being bad will also not allow a reset. DO NOT push the reset while the car is moving this can break the odo gear.

You can get the gear for cheap $25. There is a write-up on the replacement procedure on the net that I used, just can't find it right now, not hard just careful details.

Jon

adding you can clean the plastic film me4tal strips with a white eraser, clean the copper strips w/ a red eraser.
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'79 928, 85k Opal Metallic
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Old 04-06-2010, 08:55 AM
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Thank you guys for this information!
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Porsche 928S 4.7L 1980 European redhead
Old 04-07-2010, 08:41 AM
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If you look at your second picture, at the top of the tab as the connector bends over you can begin to see a letter for each connection. Follow it around the tab, iirc each tab has it's designation spelled out in German.

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Raymond
1979 928 5 spd
Old 04-07-2010, 09:05 AM
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