URGENT - will not power on at all!

1

im really stumped..I’m working with a 128x64 HUB75 RGB LED panel connected through an ElectroDragon RGB Matrix HAT to a Raspberry Pi. I’m using the rpi-rgb-led-matrix library, and I’ve already rebuilt it multiple times, tested different --led-row-addr-type, --led-no-hardware-pulse, --led-pwm-bits, and gpio mapping settings. The panel did light up before, and sometimes it will flicker but as soon as I power-cycle the PSU and reboot, the panel ignores the demo commands entirely and stays dark. can you help?

this is my matrix driver
https://www.electrodragon.com/product/rgb-matrix-panel-drive-board-for-raspberry-pi-v2/

those are my LEDs:
https://www.ebay.com/itm/225833455494

this is my regulator that is supplying up to 15Amps

this is my schematic the only thing tht i did different here is the HAT is a different one (its the one i linked) and it also doesnt have the photointerrupter on it soldered.

Screenshot 2025-10-27 180552 (1)
Screenshot 2025-10-27 180552 (1)1232×830 177 KB

this is it when it lit up that one time

IMG_7492
IMG_74921920×1440 801 KB

IMG_7493
IMG_74931920×1440 662 KB

2

Your panel has an incompatible driver F6373C.

Screenshot from 2025-11-04 18-55-42
Screenshot from 2025-11-04 18-55-42699×531 105 KB

There is no way to make this panel work with the library.

3

If that’s the link to the board you’re using… then it has a fault.

The page you listed above has a link to the explanation (MPC1119-error-dat.md).

I thought Electrodragon were shipping replacements to everyone who had purchased this version - if you contact them with the purchase details I’m sure they’ll do a replacement…

… or you can fix the one you’ve got until the replacement arrives.

4

@board707 already answered, chip FM6373 does not work at this time and is not going to work unti someone puts significant work into a new driver