I've been looking at delta tfc1212de 120mm 12cm pwm 252cfm 12038 DC 12V cooling fans can anyone tell me if they will be ok for use on the Innosilicon S11 & Dragonmint B52 miners?

Hi Can anyone help locating a replacement fan kbe-fan-12038M to be used on the S11/B52 miner?

Hi,

I'm looking for replacment fans for my innosilicon S11 and my Dragonmint B52 miner.
Currently they have original kbe-fan-12038M installed 12v 3.8a fan.
I'm looking for some spares in the UK or EU is anyone able to give recommendations on replacements and anywhere to get them from.
I've found that standard fans that I have for my antminers just don't work, the only fans I've been able to get working is the original manufacturing supplied fans.
I did try antminer fans and when fitted the miner software would increase fan speed (100%) but the fan would actually slow down (10-0%) and if the miner software slowed down the fan speed to 10% it would increase the fan speed to 100%
 
Thanks.

Ok... So after investigating more and comparing control boards between my B52's and my working S11 I see one noticeable difference.
My B52's look like they have been modified.. certainly the soldering does not look like anything a mining manufacturer would do.
2x additional components are soldered to the board.

I have no idea why this has been added and if it's this that's causing the fan speed issue.

My next question is how easy is it to fix the fan speed to say 60% on the dragonmint B52's SGminer software.

Thanks

Hello All,

Hopefully someone can help as I'm completely lost with my B52 Fan issue.
I have 2x B52's running with latest S11 firmware (not sure if this is a good idea or not although when I got the miners second hand they already had an older S11 firmware installed. Anyway I don't know how to downgrade.
So I had to change the fans as the old ones where making horrid sound so to be safe I replaced them with some spare new 4pin fans I have.
The B52's seemed to work ok until I tried to push them passed efficiency mode. As soon as I did this the hash boards overheated and shut down.
After investegating why I've found that when the software increases the fan speed it actually decreases the fan speed.
So when the fan is reporting 100% in the miner software the fan is 0% and when the software reports the fan as 10% the fan is running full speed.
I've tried fans from other miners and I've also done a factory reset but still I have this issue.
I have checked the fan wiring and it's correct (as said I've used working fans from my other miners) although they are not B52's.
This is affecting both my B52 miners.
I'm out of ideas can anyone help or has anyone experienced anything like this before.

Thanks