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  • When USB PD charger brakes?

    From Wu Ming@wu.ming2@icloud.com to sci.electronics.repair on Mon Sep 14 03:18:33 2026
    From Newsgroup: sci.electronics.repair

    I bought a USB-C 65W charger - max PD with only one port in use - for a max
    45W load. But I had to connect a cable with USB trigger negotiating fixed
    20V 5A power delivery option. Because of MagSafe 1 port on the other end.

    Battery charging surprisingly worked. I monitored P/V profile through the appropriate laptop framework and it was the same as with the original
    charger.

    Something didnrCOt look right though. Mouse pointer jittery. Metal laptop
    case slightly charged. I was acting as ground with the other hand.

    I must say used for years and years the original charger with a wall plug - without - ground pin. Meant for Class 2 low power appliances I am sure.
    Still without noticing any problem.

    Then the new, slim USB-C charger broke. Felt a rCLpoprCY sound. Both USB -C and -A ports not working.

    Faulty charger? Wrong charging cable? Lack of grounding finally caught up
    with me?
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  • From wuming2@wuming2@tilde.club to sci.electronics.repair on Tue Sep 15 00:08:11 2026
    From Newsgroup: sci.electronics.repair

    It was breaks. Even though brakes adds an interesting twist.
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