u/Bozartkartoffel

So I've got a few of these USB-C sockets for a project but they won't deliver power when plugged in on a USB-C power supply. I know that both CC contacts need 5.1 kOhm to ground. The breakout board has a solder pad for a resistor and with it, I can measure 5.05 kOhm between the CC pin on either side and ground, but it still only works with a USB-A cable. What's wrong here? The PSU is definetely okay, a different USB-C breakout board model works just fine with it.

EDIT: Turning the plug doesn't change anything. Also, I can measure continuity between CC1 and CC2 directly on the socket. Is that bad?

EDIT2: Okay, I got it. The breakout board connected CC1 and CC2 together. After I scraped away that connection on the PCB and connected both pins to ground via seperate resistors, it now works. What a shitty design.

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u/Bozartkartoffel — 23 days ago