should I be worried about the " FAILED" ? This particular S9 has one hash board stop working, a reboot fixes it for hours, or even a day, then sometimes goes back to one board not hashing.... been in operation since Nov 21 2017
chain[5]: All chip cores are opened OK!
Test Patten on chain[5]: FAILED!
chain[6]: All chip cores are opened OK!
Test Patten on chain[6]: FAILED!
chain[7]: All chip cores are opened OK!
Test Patten on chain[7]: OK!
I check my S9s 2-3 times a day. I have several that lose a hashcard which a reboot fixes - for awhile. Yes, its defective. No, its not worth sending back to Bitmain.
If anyone interested.. I shut down the miner in question, blew out the dust with a compressor. Now the test log shows...
chain[5]: All chip cores are opened OK!
Test Patten on chain[5]: OK!
chain[6]: All chip cores are opened OK!
Test Patten on chain[6]: OK!
chain[7]: All chip cores are opened OK!
Test Patten on chain[7]: OK!
Seems to be working fine now. even the hash rate went up it the 14.2 that it used to be at, rather than the 14.08 while it was having the problem.
Hopefully.
Actually I even switched power supplies. after I cleaned the S9..hmmmm. maybe bad power supply.