Hello,
I have problem with one SP20E.
After 10 second of mining miner write about problem:
LOOP[2] OFF TO:0 (test serial failed)
4: disabled (serial problem)
5: disabled (serial problem)
could some one help me? I tried change PSU, nothing to change

After reboot miner give these, all is OK except of 5th board have temperature attention to 125c, but board have only 52C.
LOOP[2] ON TO:0 (w:2)
4: DC2DC/1/:[vlt1:660 vlt2:661(DCl:794 Tl:794 Ul:738) 67W 101A 44c] ASIC:[ 85c (125c) 800hz(BL: 800) WN:0/0 (ffffffff) (E:193) F:0 L:0]
5: DC2DC/1/:[vlt1:640 vlt2:645(DCl:648 Tl:794 Ul:738) 61W 94A 52c] ASIC:[125c (125c) 840hz(BL: 840) WN:2/1 (ffffffff) (E:190) F:1 L:0]
FW 2.7.1
Turbo settings
Thanks for help