Check the miner status,there different frequency and no fan speed.
1st,eliminate the power supply as a possible cause.
2nd,try reprogramming the PIC of the hashboard with a frequency of 500. After reprogramming, the frequency should be 550.
3rd,do single-board test for the hashboard with 0 hashrate.
No. 88, Yangzishan Road, Chengdu, Sichuan, China
Building A, Zhihui InnovationBuilding, Shenzhen, China
D-2 Seri Gembira Avenue, Kuala Lumpur, Malaysia
+86 15390421113
minerfixesofficial@gmail.com