Quote from: RagingTalonS on March 22, 2021, 01:34:49 AM

Thanks. Yes I did see that guide.

I tried to take it apart today. Took off fans and side of psu then couldnt figure out how to take off psu or controller unit on top without damaging so I just put it all back.

Now its hashing @ 80Th see if it dies again in 2 days like before. Supposed to be 87-90TH.

There isn't any clear information out yet on how to service these so we will have to wait until more people crack them open. I had a similar experience, as opening/servicing wasn't as straightforward as other miners and I didn't want to risk damaging anything.

Some notes about my recent experience with Blokforge and the Avalon 1246 -
I had a sort of "bait & switch" with Blokforge, not sure if they did it intentionally or not, but NOTE:
There are various types of 1246s out there, and Blokforge was originally advertising the 90TH/s model, however they are shipping the 85TH/s model (1246-85). Also, Blokforge only supports for about 10 days after shipment is delivered, in which case you'll get pretty poor support from Canaan (w/big language barrier).

If you're running in "Normal Power" mode, and getting 80Th/s, and "High Performance Mode" gets you ~84TH/s, you most likely have the 1246-85.
To summarize: When ordering the 1246 from Blokforge, please note that you may NOT get the 90 TH/s model. This being said, I have no issue with Blokforge, as they've always been helpful in procuring miners and always reply quickly to inquiries.

Now, technically - some issues I've found with my 1246:
1.) One of the ASIC chips misreads temperature way too high (~120-180C), unfortunately not worth repairing as it hashes fine. Yet this misreading will still affect the overall average temperature reading, and cause one of the fans to run unnecessarily higher.
2.) After about 2-3 weeks of mining, one of the fans is constantly at nearly 100% RPM, regardless of how cool the unit is running. I suspect this fan will die out sooner than it should.
3.) Factory reset did nothing to alleviate these issues.

Sending logs to Canaan simply gets a reply: "Everything is working fine with your miner". Additionally, there are no new firmware upgrades yet, and online resources are basically nil, so please be sure to post as much info as you can for those running/buying this unit.

For anyone who is interested, I would wait a little bit before buying the 1246 as it seems there are still some issues with it. Aside from the points mentioned, it is still pulling about ~.0005BTC/day depending on the pool.