I accidentally shorted my pi's (3 B+) 3.3V and 5V GPIO-Pins. I was curious how to repair it and found this helpful answer. So I reworked the pi as described: Removed the broken MXL7704-R3, soldered a new one and checked the voltages. They are as indicated in the image (1.2V 3.3V, 1.8V and 1.2V). To i guess i successfully replaced the MXL7704. But still, the Pi doesn't boot...

What are other typical faults that i could check and maybe lead to a repair of my Pi?

  • 1
    This is impossible because the Pi uses a custom PMIC.
    – Milliways
    Commented Mar 14, 2021 at 11:49
  • Any references to the custom PMIC might be helpful in order to configure the MxL7704 accordingly Commented Mar 14, 2021 at 12:52

1 Answer 1


The simplest, most cost effective, and quickest repair is to buy a new Pi.

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