My bad for bringing that insane option up. The whole idea is TO AWAY from the controller board where the problem lies and ditch PWM. Throw on a couple Noctura IPCC 3000's on each side powered directly from the PSU and I have my 58-60c constant. Now I don't have to worry if that issue comes back where it will disconnect and stop mining but the heat will just keep increasing. I've eliminated that with attaching the fans to the PSU directly. Don't need PWM, they were always at 2700 or so anyway. 6 year warranty on those fans, they may as well get their time in the light.

I think this batch of 5 antminer s5 have problems, too many issues fall of power, I send to my pcb in serbia I paid $ 50, usually when a user sends in security should not pay anything, RMA exists for this, all payable by the seller, not the buyer

I find a 90 second depression of the reset dependable.

I actually have done pretty good the past week with mine.  Normally I was going 1 or 2 times a week to reset.  Now Ive went 3/4th of a week without needing to.

Cant say anything caused it just luck, but I hope it keeps going.

Such as? Don't say shit like this without giving some details.

I've got 6 of the S5s now and haven't experienced anything like you're talking about.

The only issues I've had are:
rapid switching on/off westhash/nicehash causes a drop in GH/sec
loss of internet access has caused fan/thermal runaway once

From about 10 Ants one is with dead controler board, 3 more Ants are not running stable after a few hours the hashrate drops a half and i need to restart the miner..... before S5 i have a lot of S3 Ants - rock solid device if we compare it against S5.






PS : I dont like Bitmain Warranty Support, after a week from my first message.....nothing just "try this" , "try that".....today i try to fix the Ant firmware with bootable sd card but nothing, now i'm waiting for answer whats next. Is there any chance to receive a working controller board from Bitmain or i have to pay again  ?  

has anyone try to overclock it above 425 Mhz? i run it on stock fan with temps 53/49 and c the fan at full speed about 3960 rpm and no x on acic chips and about 1375 Hf/s when i try to go above 425 still i have no hardware errors but my hash rate drops at 1200 Gh/s or lower? any explanation for that?? and my s5 looks rock solid having it run for more than 4 days at 425Mhz
P.S. i have allready ordered 2 delta fans  http://www.ebay.co.uk/itm/271775072487?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Well my S5 is running stable now thank god. I too had the hashrate nosdive of death which if you read a few posts ago is probably due to them globbing the fuck out of the chips and whatever Ho CHi mihn heatsink paste they use has a hard time spreading out evenly. If you experience the hashrate nosedive of death I recommend running them stock or underclocked slightly to keep the chips warm to burn through the crap they put on there for a few days then go back to stock, then start overclocking. I remember a pic of an S3+ with so much paste is was all over the PCB, ouch!