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Blew a cap on a motherboard using a hot air station on too high
I was reworking a laptop mobo from a 2017 Dell XPS 15, trying to remove a bad HDMI port. Set my hot air station to 400C like I always do for big components, but I guess the shielding on that board held the heat in too long. Popped a nearby ceramic cap and had to spend 2 hours tracing the short. Learned I need to preheat the board to 100C first and drop my air temp by 30 degrees for dense areas. Any of you guys use a specific temp curve for multi-layer boards?
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lisa6711d ago
Yeah @foster.dylan's 350C with preheat sounds like the sweet spot. A buddy of mine tried the same thing on an old MacBook logic board last year. Cranked it to 400C like he always did for desoldering RAM chips and fried a whole row of tiny resistors near the power management IC. The board was totally dead after that, had to scrap it. He still blames himself for not checking the board layout first.
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