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Dash Gauge circuit board replacement

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Old Aug 20, 2018 | 04:54 PM
  #1  
Black 84 Z's Avatar
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From: Ocala, FL
Car: 1984 Z28
Engine: 350ci
Transmission: 700R4
Axle/Gears: 3.73 12 bolt
Dash Gauge circuit board replacement

My dash gauges and lights are all messed up. I've done some searches here and repaired a few things, some of which worked and some of which didn't. Main issues are: Most of the bulbs don't work, right blinker messes up the oil pressure, volt, and temp gauges, and the tach is pinned at max RPM. I've ordered the capacitor to fix the tach, and I swapped the headlight switch to try and fix the blinker issue as it seemed from the search that was the problem but no luck. I moved around the bulbs to see if they were dead and most worked when put in a known working socket. I've gotten used to the annoying glitches to some extent but would like to fix them. My printed circuit board on the back of the cluster has seen better days and some of it is peeling off. How tedious is it to replace it? I really don't want to peel the whole thing off and find that I can't get it lined up correctly and now none of it works. Am I thinking too much about it?
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Old Aug 24, 2018 | 08:49 AM
  #2  
Go Blue's Avatar
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Re: Dash Gauge circuit board replacement

Interested in the answer to this as the bulbs on the top half of my gauge cluster don't work and they were just replaced with brand new bulbs and replaced the headlight switch for several reasons and that didn't fix it. I was considering getting a new gauge cluster to fix it, but I haven't given up on mine yet. I was going to try cleaning the contacts on the bulb socket and cluster where they make contact next.
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Old Aug 24, 2018 | 09:16 AM
  #3  
mmadden55's Avatar
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From: Houson
Car: 86 Firebird
Engine: 305 SBC
Transmission: 700 R4 TCI
Axle/Gears: 3.42
Re: Dash Gauge circuit board replacement

The printed circuits on the gauge cluster are just thin copper sheet clean them with polishing compound on a clean rag and they will work fine unless you have breaks in the copper which you can bridge with some tin foil.. To do this cut a piece of tin foil to fit with some scissors, put it in place, then paint over it with some clear nail polish or lacquer to hold it in place .
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Old Aug 26, 2018 | 02:42 PM
  #4  
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Re: Dash Gauge circuit board replacement

I was actually able to make them all work using a simple pencil eraser and cleaning the contacts and contact pad on the back of the cluster and by bending the contacts up a little to make better contact with the circuit board. Worked great and cost nothing but time.
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