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28/03/2024
BG251220186
Great write up.
Question for you. is the iron handle and/or tip grounded through the PCB even if the chassis isn't grounded? I can see a benefit to not having the tip grounded if you needed to work on a live circuit. I've been thinking about adding a switch inline to ground that would remove the tip from the earth ground path. maybe a key switch, so that it can't be accidentally removed from ground, hmm.
Lastly, I know about the heatsink over the trace on the 72W power supply board. I think that this unit is supposed to have the 108W power supply board. is the problem with trace/soldermask/heatsink overlap present on the 108W board also? I've tried searching online for the answer but I have not found any reviews or tear down articles or videos specifically for the 108W board units.
TIA
elliot Great explanation!
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