Help with CM3588 NAS Kit. Fan not working.

[B1r0]

Hi all,
I think I might have damaged the fan power.
Preparing a Noctua 5v fan, I stupidly inverted the positive and negative wires, and now not even the fan that came with the kit is spinning when connected to the board fan connector.
If I take the 5v power from a USB port, both fan spin.

I am currently running Armbian and I have unsuccessfully tried the code below suggested by @yaazzz I've got from another post.

Code: Select all

echo 59 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio59/direction
echo 1 > /sys/class/gpio/gpio59/value

With a tester, I checked the voltage from the connector pins and without load, I got 5v, but as soon a fan is connected, the voltage drops to 2.5v

I've also tried, unsuccessfully, to start from scratch, flashing an official image.
None of the images I've flashed, aside the one from Armbian, has booted from the SD.


Any suggestions?
Did I fry part of the board?

Thank you.

[B1r0]

Does anyone know who I can troubleshoot this issue?
I would be truly grateful if I could find a solution.

[lionelefox]

Sounds like the fan header’s power driver or protection circuit took damage. Seeing 5V no-load but voltage collapse under load usually means a weakened regulator or transistor. USB powering working confirms the fans are fine. Likely hardware-level failure, sadly not software related issue despite reflashing images or GPIO attempts there.