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Topic: S19J PRO - Help with repair (Read 69 times)

jr. member
Activity: 31
Merit: 6
November 14, 2021, 03:50:37 PM
#1
Hello,

i have board where only 21 chips found. Resistors around chips 21 and 22 are good.
I changed chip 21 and 22, but same result, only 21 chips was found.
I used this repair manual :
Code:
https://www.zeusbtc.com/manuals/Antminer-S19-Pro-Hash-Board-Repair-Guide.asp

Is layout chips different between S19 PRO and S19J PRO ?
Or chips from Alibaba are bad ? Smiley .


Soldering is good, checked twice under microscope.


Thanks.
M.
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