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What caused this pcb to blow out?
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<blockquote data-quote="Geoff1946" data-source="post: 536904" data-attributes="member: 28452"><p>PCB faults adjacent to mechanical parts like switches often start as bad soldering during manufacture. Eventually arcing starts and then anything can develop. However, in your case the tracks look to have simply blown, - effectively acting as a fuse. I suspect a short in one of the lamps or its holder. Check the wiring and replace both lamps to be on the safe side.</p><p>I would have repaired it in a similar way, except there is no need for the heavy cable. A single strand from (say) a bit of 1mm would be better, and wrapped around the switch terminal post. The metalisation should be removed from the PCB with emery. Also one of the switch terminals still isn't properly soldered.</p></blockquote><p></p>
[QUOTE="Geoff1946, post: 536904, member: 28452"] PCB faults adjacent to mechanical parts like switches often start as bad soldering during manufacture. Eventually arcing starts and then anything can develop. However, in your case the tracks look to have simply blown, - effectively acting as a fuse. I suspect a short in one of the lamps or its holder. Check the wiring and replace both lamps to be on the safe side. I would have repaired it in a similar way, except there is no need for the heavy cable. A single strand from (say) a bit of 1mm would be better, and wrapped around the switch terminal post. The metalisation should be removed from the PCB with emery. Also one of the switch terminals still isn't properly soldered. [/QUOTE]
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What caused this pcb to blow out?
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