Re-attempted P104-100 repair and gave up

Hello, it's the incompetent me.

I got my hands on these P104-100 mining GPUs, of which I have quite a few, for about 4000 yen each.

And the circuit trace on one of them...

Yes, it's broken (´・ω・`)

So, I attempted a repair.

A design knife was too big to strip the trace, so I used a sewing needle.
After that, I pulled a cable from a PC fan with broken fins and jumpered it.

I performed the continuity test with the multimeter I bought the other day (I ordered an ANENG AN8008 multimeter.).

Result

It's a total mess, but with this...

It started to be recognized, but the fan doesn't spin and it doesn't operate normally.

To be continued.

Well then. Sorry for the lack of a proper conclusion (´・ω・`).