Pixhawk 4 can't connect via USB; all Status LED on

Pixhawk
1

Hi, I have a Pixhawk 4 that turns on when I plug it into a computer, but the computer doesn’t detect the COM port.

All status LEDs from both I/O and FMU are constantly ON, except for the ACT on I/O which is blinking.

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Here is what I know:

  • It is not an issue with the USB cable because it is working on another Pixhawk 4

  • It is not an issue with the computer or the OS because I’ve tried on two different computers and both on Linux and Windows (and they both detect other Pixhawks)

  • The SD card works and has a PX4 Firmware in it (tested on other Pixhawks)

  • When plugged in, the Pixhawk processor gets hot really quickly

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  • QGroundControl doesn’t detect it (consequence of the computer not detecting it in the first place)

  • Manually flashing the Firmware doesn’t work either (consequence of the computer not detecting it in the first place)

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I have already asked for help on Dronecode Foundation Discord server, got someone trying to help, but we couldn’t figure it out.

This Pixhawk 4 has worked before.

Does anyone know what might be the issue or some way of getting any logs?

2

Hi,
If “When plugged in, the Pixhawk processor gets hot really quickly”.
This means the hardware may be damaged.

3

Oh, that would be a bummer…
Do you think there is a possibility that there might be an issue with the bootloader instead? Should I try to install it again?