Code:
2023-05-14 12:36:18 Chain[0]: find 126 asic, times 0
2023-05-14 12:36:19 !!! reg crc error
2023-05-14 12:36:20 Chain[1]: find 124 asic, times 0
2023-05-14 12:36:21 !!! reg crc error
2023-05-14 12:36:22 Chain[1]: find 124 asic, times 1
2023-05-14 12:36:23 !!! reg crc error
2023-05-14 12:36:24 Chain[1]: find 124 asic, times 2
2023-05-14 12:36:24 Chain 1 only find 124 asic, will power off hash board 1
2023-05-14 12:36:26 Chain[2]: find 126 asic, times 0
S19j Pro comes with 126 chips on each hashboard, you can find this information online or by looking at a good miner's kernel log.
At first, the miner checks Chain 0 which is usually the one on your left-hand side when facing the miner (you can read on the control board and find the numbering, deosn't always have to be labeled 0,1,2 it could be 3,4,5 , 5,6,7, you know the smallest number represents chain 0).
So chain 0 sees 126 asics, it moves to chain 1, which is the middle board and the one that usually fails, it will always try to send the single 3 times until one of these scenarios happen
A- it gets a reply signal from chip 126
B- the signal drops before reaching that last chip for 3 consecutive times
then it moves to the last chain and repeats the same process.
If it returns 0 errors, you will have a few possibilities, but since it is returning 124, it simply means that chip 124/125 has an issue, probably some solder-related issue, something that's beyond the average person's ability to fix.
So what to do now?
1- Perform a reboot and see if that helps
2- Flash ONLY stock firmware from Bitmain's website
if those two don't help, you should contact the seller and request a refund/replacement, if they offer you 20-30% return, take it, if they ask you to send only the bad hashboard for repair/replacement, go for it, try to refuse the option of returning the whole gear since that could take months.
Try to negotiate with the buyer to get the best deal out of this mess, tell them you can send video proof, showing that it's indeed the gear he sold you, would be better if done via a video call and you follow their instructions.
do NOT attempt to flash any custom firmware unless the seller approves it, because they will use that against you and won't grand you any warranty.
