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bigtreetech / Manta-M8P

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Dead USB Hub #68

Open timmit99 opened 1 year ago

timmit99 commented 1 year ago

USB Hub dead

Hardware:

Issue:

Diagnosis:

I was going through my initial setup, had gotten the boards serial number for klipper, as well as another board via lsusb and ls /dev/serial/by-id/* and all was working fine. All of the sudden, after a FIRMWARE_RESTART to update a config value, the MCU couldn't connect.

Sure enough, upon further evaluation, LSUSB returned only a single item, the Linux root hub. It no longer saw the onboard Hub IC or thee camera/controllers connected to the board: image

To check if the CM4 was damaged or the M8P, i powered down and swapped the CM4 over to my BTT PAD5 and sure enough, there, it detected all the devices plugged in: image

This shows that the CM4 is working as intended and is not the issue. Inspection of the board shows no signs of damaged chips, burnt parts, lifted traces, etc.

looxonline commented 1 year ago

First time I am hearing of this. I will skim through the schematic to see if there is anything that may have caused it.

timmit99 commented 1 year ago

Thanks, let me know what you want me to do for testing. Happy to try and diagnose this issue. I've done visual inspection with no obvious signs of damage and can upload more photos tonight.

timmit99 commented 1 year ago

Board Overview Top

20230703_124811

CM4 Area Top

20230703_124820

CM4 Overview Bottom

20230703_124828

USB Hub IC

20230703_124849

The USB Hub IC looks suspicious.

Twdiap commented 11 months ago

I have the same problem, BTT told me the board is dead and refuse warranty...

looxonline commented 3 months ago

I have the same problem, BTT told me the board is dead and refuse warranty...

Hey there! I have just been speaking to timmit about this and I thought that I would come and search to see if anyone else was having this issue and I found you. I would like to offer to replace your M8P if you are still in possession of it and can show me the lsusb results. Please send me a mail at luke@bigtree-tech.com if you would like to take me up on the offer.

pokeygithub commented 2 months ago

My problem is slightly different. Mine is missing the 5vDC On the usb ports.