I'll get some logs tomorrow.  The fans and boards are good as far as I can tell.  All fans run perfectly up to max speed.  The boards can hash at 75-78 th, but it seems like the miner reboots randomly.  When it happens, the board temperatures drop to 0 and the fans go to full speed.  It did the same thing one two different pools. 

A few days ago after a reset it ran for 8 hours straight at full hash rate before randomly rebooting.  Its not temperature rated as it is supplied cool air (13-16C from outside). 

The reset was just to try and narrow down any on potential issues.  We have another identical miner running on the same network and it doesn't have the same issues.  Potentially a control board issue?

Hi Guys,

I've been reading over this trying to troubleshoot my personal 1166 pro 78T.

So when the device arrived, used, I discovered it had a faulty PSU.  I replaced the PSU with a brand new direct replacement PSU.  That seemed to get the miner working, but it is rebooting frequently (5-10 times an hour) and the pool never registers any consistent hashing above about 10-20th.  It did have a 7 or 8 hour stint working at a consistent 75ish th/s but I haven't been able to replicate that.

Long story short, I have tried literally every way to factory reset the miner using the PDF on Canaan's website. I have had zero luck. 

Using the RST button just restarts the miner and does not reset the network settings or anything (it continued to mine after restarting with the same intermittent rebooting).  I have also tried the two methods they list in the manual near the end of the PDF in appendix 1 (can be downloaded from the link here: https://canaan.io/product/avalonminer-1166-pro)

Can someone describe the process very clearly, as if a 5 year old was following the instructions?

Thank you