Hey everyone, hoping someone can help me figure this out. I'm having this strange problem with my Raspberry Pi 5 where it completely refuses to boot when I try to power it through the GPIO pins, but works perfectly when using the exact same power supply through the USB-C port.
When I connect power to the 5V and GND pins, I get the green LED flashing briefly before it settles to just a solid red light. No boot, no display output, nothing. But here's the weird part - if I take that same power supply and plug it into the USB-C port instead, it boots up perfectly every time.
I've already tried everything I can think of. My power supply is putting out a solid 5V/3A (checked with a multimeter), I'm using good quality thick wires with proper polarity. I updated the EEPROM to the latest version, tried the PMIC reset trick by shorting the RUN pin, and tested with a completely minimal setup, no peripherals, different SD cards, the works.
At this point I'm stumped. Has anyone else run into this? Could there be some software setting I'm missing that's preventing GPIO power from working? Or is my Pi 5 just being picky about how it gets its power? But if so, why? Any suggestions would be really appreciated - I'd love to get this working through the GPIO pins if possible.
Thanks in advance for any ideas you might have!
When I connect power to the 5V and GND pins, I get the green LED flashing briefly before it settles to just a solid red light. No boot, no display output, nothing. But here's the weird part - if I take that same power supply and plug it into the USB-C port instead, it boots up perfectly every time.
I've already tried everything I can think of. My power supply is putting out a solid 5V/3A (checked with a multimeter), I'm using good quality thick wires with proper polarity. I updated the EEPROM to the latest version, tried the PMIC reset trick by shorting the RUN pin, and tested with a completely minimal setup, no peripherals, different SD cards, the works.
At this point I'm stumped. Has anyone else run into this? Could there be some software setting I'm missing that's preventing GPIO power from working? Or is my Pi 5 just being picky about how it gets its power? But if so, why? Any suggestions would be really appreciated - I'd love to get this working through the GPIO pins if possible.
Thanks in advance for any ideas you might have!
Statistics: Posted by mariac2 — Tue Aug 05, 2025 12:33 pm — Replies 3 — Views 182