Thanks for creating this thread as I'm sure many owners (like me) have ongoing problems with these supposedly multifunctional paperweights.
It's been a few months since I've turned on this miner and in the beginning it worked fine hashing at 1.6TH with temps in the range of 75-85C (core).
My troubles started when CTA1 started to report inconsistent temperatures usually +15-20C above CTA0 while ambient temps have not been changed.
Shortly after this anomaly CTA1 started to throttle very often. I have cleaned the original thermal paste and reapplied a known quality brand.
This seemed to fix the issue for several weeks and CTA1 was within 5C range and I was a happy miner (my overall temps have gone down considerably too).
Next I encountered the "dead core" cointerra disease, as half of CTA1 disappeared. I was reflashing and restarting this diabolic device multiple times and disconnected/reconnected all the connectors inside to resolve this issue.
Couple of weeks after I'm again seeing CTA1 throttling very often meanwhile the reported hashrate is 1.3-1.5TH (temps in the 80-95C range).
I'm thinking about ordering quality thermal pads due to the unevenness of the chips surface and using a proper wc loop ("luckily" I have spare parts - will report back when it's done).
Do any of you found a permanent fix or tried something else with success?
I used this
http://www.frozencpu.com/products/7038/thr-41/Innovation_Cooling_Diamond_7_Carat_Thermal_Compound_-_15_Grams.htmlI also used Arctic Clean to clean up the huge mess first. You want to put a small drip of compound on each chip. They say pea sized on the instructions but I used a little less for each chip since they are a lot smaller than a CPU.
I have had it running stable for 3 weeks now with no temp rises.
I had tried Arctic silver first but that didn't help at all, the Cooling Diamond was like night and day and has been working fantastic.