Switch won't boot, battery flashing, odd mod?

Bought this beat-up switch. Owner said it boots when plugged in, but not for me. When charger is in, red battery is flashing.

However when I opened the hood there was some wire soldered that shouldn’t be there originally. Grey one by the USB-C.

Any idea what it does and why was that done? Or how should I proceed with fixing this?

I don’t seem to be able to add pictures, however it’s on imgur ending with a/cSrU3QH.

Look like they have connected the USB power directly to the input of the charge-chip, bypassing the M92.
I would remove the wire and have a closer look at the M92, it looks from those pics like some of the pads may be a little messed up.

1 Like