Hello,
only for info:
This comes back from bitmain after repair - S19 PRO , hashboard stop working after 1day.
Repair process in bitmain is very bad, they dont have good repair tools and skills.
1. Missing current/cooling plates on PCB ways
2. burned PCB
3. Insulation sheet was cutting off, heatsink is not
4. very low thermal conducting paste
Here are pictures:
https://ibb.co/sykm4YK
https://ibb.co/xMzcrHH
https://ibb.co/gD6WTfq
MP.