I'm not sure how, but I can't power up my Pi5 via USB-C any more. The red LED won't even turn on.
OTOH, I can still power it over the 5V & GND I/O pins. But that leads to the message that the power isn't up to provide 5A and thus the OS won't supply power to peripherals.
I wonder if I can repair the power circuit.
I can't identify any physical damage. I suspect it was caused by an electrical mishap (due to what I did, it could be a short circuit or overpowering or reverse power on the 5V/GND I/O pins, as that's where I had connected some additional circuits).
I have de/soldering skills and basic electronic understanding (I know what capacitors etc. are and I've un/soldered SMD before), but I have no practice in analysing a power supply circuit. I have a decent multimeter but no oscilloscope (wouldn't it be fun to use the Pi as one, so it could operate on itself).
Are there any guides on how to analyse the power circuit, such as where to measure to figure out which part might be dead?
OTOH, I can still power it over the 5V & GND I/O pins. But that leads to the message that the power isn't up to provide 5A and thus the OS won't supply power to peripherals.
I wonder if I can repair the power circuit.
I can't identify any physical damage. I suspect it was caused by an electrical mishap (due to what I did, it could be a short circuit or overpowering or reverse power on the 5V/GND I/O pins, as that's where I had connected some additional circuits).
I have de/soldering skills and basic electronic understanding (I know what capacitors etc. are and I've un/soldered SMD before), but I have no practice in analysing a power supply circuit. I have a decent multimeter but no oscilloscope (wouldn't it be fun to use the Pi as one, so it could operate on itself).
Are there any guides on how to analyse the power circuit, such as where to measure to figure out which part might be dead?
Statistics: Posted by tem_pi — Thu Feb 19, 2026 9:47 am