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09-07-2017, 12:27 AM | #1 |
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Join Date: Aug 2009
Location: Orange County, CA
Posts: 170
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Printed Circuit Board Question
If I'm changing the bulbs in the dark spots on my instrument panel, and nothing is happening, does that mean that l for sure need to replace the printed circuit board?
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09-07-2017, 05:01 AM | #2 |
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Join Date: Aug 2009
Location: Orange County, CA
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Re: Printed Circuit Board Question
Nobody? I just don't want to waste the $60 on a new printed circuit board if there's another common problem that's causing the dark spots.
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09-07-2017, 05:47 AM | #3 |
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Join Date: Jan 2016
Location: Barber City, CA
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Re: Printed Circuit Board Question
try swapping some of the known good lamp/lamp holders around for a quick test, those mini bulbs can be finicky in those holders..
may need new lamp holders and or contact cleaning.. pocket screwdriver or similar tool with paper towel and contact cleaner may help.. can test the assemblies outside the dash with some test leads to a battery.. possibly need to take the cluster out to inspect/clean ribbon as necessary.. be gentle, plastic is fragile.. q-tip swabs and contact cleaner may do it.. be careful to keep the cleaner on the copper only as much as possible and apply light pressure.. crc and wd-40 electrical contact cleaners have worked well for me in other similar applications.. good luck! btw, where ya at in OC? |
09-07-2017, 05:57 AM | #4 |
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Location: Orange County, CA
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Re: Printed Circuit Board Question
Thanks for all of those tips! I guess I can find contact cleaner at Radio Shack?
I'm out in Corona now. |
09-07-2017, 04:01 PM | #5 | |||
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Location: Barber City, CA
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Re: Printed Circuit Board Question
Quote:
lots of good tips added in, you should be in good shape after checking all of those things.. radio shack may be more difficult to find than the contact cleaner, lol.. as mentioned above, local auto parts house or home depot will have what you need.. Home Depot carries both of these; http://www.homedepot.com/p/CRC-QD-11...30-6/202262505 http://www.homedepot.com/p/CRC-11-oz...5103/205021975 product info QD® CONTACT CLEANER, 11 WT OZSKU02130 Quote:
while we're on the subject, this type of product is useful for locations where you may not be able to apply direct contact.. they both serve pretty much the same function, just need to be sure components in incidental contact won't be harmed.. read the application guides and warnings and you should be good to go for trouble free electrical connections product info QD® ELECTRONIC CLEANER, 11 WT OZSKU05103 Quote:
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09-07-2017, 06:25 PM | #6 |
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Location: Orange County, CA
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Re: Printed Circuit Board Question
I was able to find the red can. Thanks for all of the help!
I'm not sure whether or not the board is delaminatng. I guess I thought that the circuit board had to be disconnected from the back and pulled out from behind the dash for inspection. Laying on my back up in the floorboard. |
09-07-2017, 06:01 AM | #7 |
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Location: South Westerlo, New York
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Re: Printed Circuit Board Question
If they're regular bulbs try what killer bee suggests, if switching to the LED bulbs, try turning the bulbs 180 degrees. the ones I put in only light one way.
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09-07-2017, 09:25 AM | #8 |
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Location: Pasadena, CA
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Re: Printed Circuit Board Question
Check known good bulb holders first. Auto parts stores will carry the contact cleaner. A light scrubbing with scotch brite on the contacts will help too to remove oxidation. You can check continuity on your printed circuit with a meter.
LED's like Hamjet mentioned are a worthwhile upgrade but they're polarity sensitive so flip them around if they don't light up. I did mine for $10.
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09-07-2017, 09:33 AM | #9 |
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Location: Chattanooga, TN
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Re: Printed Circuit Board Question
You can try to test the hot side of the PC Board at the bulb locations with a test light and see if you are getting power. Then test the ground side of each bulb. Then you would know where to chase the problem. Is the current PC board de-laminating?
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09-07-2017, 10:20 AM | #10 |
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Location: Portland Oregon
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Re: Printed Circuit Board Question
Just went through the same issue with my brand new circuit board. I had to burnish the contacts on the old bulb holders and some needed a slight tweaking of the contacts. I had to careful with the tweaking as the new circuit boards are so thin I was worried about damaging it with too much pressure.
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09-07-2017, 11:57 AM | #11 |
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Re: Printed Circuit Board Question
A small piece of red scotch brite will clean up the circuit board traces very nicely!
Ben
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09-08-2017, 09:25 PM | #12 |
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Location: Gonzales, La
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Re: Printed Circuit Board Question
Check the ground wire on the back. I had the same issue, added a ground wire to the back of the cluster to a solid clean metal on the firewall and presto. Lights worked again.
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