Bitcoin Forum

need help with my Antminer U3 the cooling fan is not running.
my config is: cgminer.exe --bmsc-options 1125200.57 -o stratum+tcp://stratum.solo.nicehash.com:3334 -u ... -p --bmsc-voltage 0800 --bmsc-freq 1286
is there any config that can continuously run the fan or my fan is dead?

I think the fan on the U3 is supposed to be always on. There's no speed control, just 12V. If the fan doesn't spin it's either dead or unplugged.

thank for you answere sir.

yes it doesn't spin at all... but if I remove the plug and plug it back it spin a little and stop. maybe it is dead! what should I do? should I replace It?

Spin it with your finger. If it's stiff, might be a lubrication issue. Otherwise yeah it's probably shot.

If the miner still works that's good, pretty sure you can replace the fan as it's just an 92 80mm one. It's likely a three pin connector if it's powered by just 12V.

Thanks for correction from hagssfin below, 92mm not 80, but still 3 pin.

It's a 92mm 3-pin circle-shaped fan.

See more here
http://www.dogiecoin.com/bitmain-antminer-u3.html

yes the miner still works... the only issue is the fan. I spin it manually but it does not work. may be I replace it. Yes its 92mm 3 pin circle ship fan.