Quote from: Wolf_Tech on October 13, 2017, 02:35:37 PM

My 2 Antminer L3+'s run about 40c on the PCB and about 50 to 60 on the Chips. Also nice quiet around 40 decibels. I switched out the default fans for 2 Noctra Industrail PPC 3000 rpms. I cut the cord for the PWM and made then run full speed all the time with a push pull method. I also fixed some airflow issues inside the miners after 30 days. I pulled the boards out and noticed a black rubber on one of the sides causing airflow blockage. I removed it and airflow around that back board increased and temps went down.

I also noticed sometimes the miners will reboot couple times a day. I found out why. Most antminers in the bitcoin line like the s5 and s9 have the queue set to 8192 or 9999. I found that the firmware in the Antminer L3+ runs the queue at 1 and if you mining with 288 chips this is too low. The only fix is to log into the miner using winscp and goto \etc\init.d and find the cgminer.sh inside that removed the -T and --syslog and replace it with --queue 9999. Save it and then apply your pools again. The problem is if you shut down and turn back on it resets it back to queue 1. Bitmain really needs to fix this in a firmware update.

After I made those changes though it runs very stable above 500 mh's on many pools.

Wolf, interested in learning more about the fan, I live in a high temp environment, have 4 L3+ and 4 D3 coming.

Is this a modification I could do in temps of 35c? of the new fans dont flow enough for theat.

Look forward to learning more, thanks for your info