I've been mining with my new S19j Pro (104th) unit for about 4 months. I build a soundproof box and placed it on the side of my house. Everything was running smoothly through the cold weather, but now that the the weather is hitting 75ºF+ it randomly throws:
2022-03-30 18:17:51 !!! reg crc error
2022-03-30 18:17:51 chain avg vol drop to 9.07
2022-03-30 18:17:51 Sweep error string = V:1.
2022-03-30 18:17:51 ERROR_POWER_LOST: pic check voltage drop
2022-03-30 18:17:51 stop_mining: pic check voltage drop
2022-03-30 18:17:51 uninit_temp_info
2022-03-30 18:17:51 do not read temp anymore...
2022-03-30 18:17:51 cancel thread
2022-03-30 18:17:51 cancel thread
2022-03-30 18:17:51 ****power off hashboard****
2022-03-30 18:17:51 temp monitor thread exit
Restarting the miner will get it back online, but it always goes down again after a while.
Troubleshooting I've done:
1) Upgraded the firmware from bitmain
2) Deconstructed inspected and carefully cleaned the unit with brush/vacuum/isopropyl alcohol
I'm in the Austin TX area, so the days are getting hotter, I notice that if the day is fairly cool, the miner stays online for 24 hours or more but as soon as the temperature tips up a bit, I get that error.
Has anyone experienced this before? Any recommendations to prevent continuous miner shutoffs?