Toniebox won't start

Hello,
I’m new here and would like to say hello to everyone with my bad English.

I have a Toniebox here with the same problem.

I’ve already repaired a few things: C322 had a short circuit, I replaced R322 with a 200k because otherwise no RFID was recognized and R89 was missing.

The battery is charging but it’s not supplying the box at the moment.

I suspect there’s still a fault with the T34X

The box works but the processor, U320(BWGU) and T320 are about 45 °C

I could use some ideas and some help.

Best regards, Jürgen