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The USB ports on my Raspberry Pi 2 model B V1.1 do not receive any power. I measured the USB pins with a multi-meter, which should have 5V, but have none.

  • I tried different power supplies, which work properly on another RPi 2.
  • I measured C97, C98, C99 and C100, all of which receive no power.
  • The Pi boots properly, the GPIO pins do have 5V on them.
  • The USB peripherals work fine on other devices.
  • I tried different SD cards with different Linux distros.

I tried looking for any polyfuses for the USB ports, but I cannot find them for the RPi 2.

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1 Answer 1

Reset to default
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Looks like hardware is damaged for some reason?

Also, have a look at these links:

https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=93463

Disabling USB ports

Apparently, there are commands to turn off USB power as mentioned in these threads. Maybe you could try some to enable the USB power.

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  • It's worth noting that at least some of those commands will kill power to both the USB sockets and the ethernet socket. That would make it impossible to issue any further commands to the Pi - use with caution, and make sure you've got an exit strategy in case of disasters.
    – goobering
    Commented Sep 26, 2016 at 13:41
  • @goobering How's reboot for an exit strategy?
    – Dmitry Grigoryev
    Commented Sep 26, 2016 at 15:03
  • @DmitryGrigoryev Good question! I'm about 90% sure it'll reset itself after rebooting, but my Linux-Fu is fairly miserable and I don't particularly want to be the one to test it. Bricking a Pi isn't on my to-do list for the afternoon.
    – goobering
    Commented Sep 26, 2016 at 15:50
  • Thank you for your answer, it was an option I did not try yet. Sadly it did not work for me.
    – Kevin Matsubara
    Commented Sep 27, 2016 at 6:42
  • Sometimes I find that the QC on power supply cables are not consistent and my occasional power problems can be fixed by swapping out the cable. I hope your Pi itself is OK.
    – SDsolar
    Commented May 12, 2017 at 17:11

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