08-29-2020, 12:01 PM | #1 |
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Tail Light Problem -- I think I'm missing something
I'd be grateful if anyone can help me out with this.
I've read the numerous posts about the tail light issue. I'm having problems with the right outside tail light. The reverse and brake lights work, just the running light that is out. One of the two bulbs was burned out so I replaced that. That didn't fix the problem so I replaced the circuit board. That didn't work either. When I removed the new circuit board I noticed that the small round part had popped it's cap. I ordered another circuit board and the same thing happened. I don't know what to do next. It seems as if something is burning out the circuit boards? Thanks |
08-29-2020, 12:56 PM | #3 |
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Drives: Z4MC, X3-35i,525i, Corrado G60
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It's either a shorted LED/wires or defective circuit boards. Use a DVM to measure the resistance of the LED on the bad side and compare the value to the good side.
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08-29-2020, 12:58 PM | #4 | |
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Quote:
https://www.youtube.com/watch?time_c...ature=emb_logo Here is another video, much better lighting and voice where the root cause and solution are the same, so hopefully you have the same issue and can fix it yourself and stop buying parts. Not sure why your replacement board didn't work, maybe it was simply defective as it arrived to you but try this and see if it works. The key here is to apply the 12volts with the original board in place, get a plastic tool like in the video and tap or press on the parts to see if you can get your lights to momentarily light up and which part(s) need resoldered. If so, follow the repair. https://www.youtube.com/watch?v=BsAkqlqcJFs |
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09-07-2020, 08:51 AM | #5 |
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Thanks for the tips. The second video is helpful. He makes the soldering look so easy and it probably is if you've had some experience. I did keep the original board and am having someone else try to solder the known resistor.
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09-08-2020, 08:08 AM | #6 |
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There are other ways to resolder surface mounted components and that's with a hot air gun. This uses super heated air that blows through a small hole in the tip to focus the air where you want it. It's less likely to burn the board and doesn't require physically touching the components. Either way works.
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