Quote from: bbxx on September 14, 2014, 07:11:21 PM

Quote from: awaygotroubles on September 12, 2014, 09:14:11 PM

Quote from: faetos on September 12, 2014, 09:04:37 PM

Quote from: bbxx on September 12, 2014, 07:05:25 PM

hi
my antminer s3 at stock settings started to low performing

freq
218.75

temps
37
41

asic status
oooooooo oooooooo
oooooooo ooo-oooo

so one chip is dead?
reboot does not solve this...

Elapsed   GH/S(5s)   GH/S(avg)   FoundBlocks   Getworks   Accepted   Rejected   HW   Utility   Discarded   Stale   LocalWork   WU   DiffA   DiffR   DiffS   BestShare

5h 40m 10s
406.93
428.80
0
429
15,852
5
42
46
45,253
0
3,601,572
6,084
2,029,025
639
0
2,530,253

that a lot of discarded...
is it normal ?

there is polmine raport
https://polmine.pl/getgraphdatasrv.php?gid=BTC_worker5567092517e0ed42d94cf318195e0737

Discards do not matter. CK said they mean nothing and should never have been reported and tracked in the first place. The "-" you see is a malfunctioning ASIC. It should still be under warranty and BitMain can help you fix it if the chips is bad. I got someone good when I had a under performing board and they replaced it.

Before you do all that "-" is not a dead a ASIC "x" is and even those can come back (I've seen it) power off the supply try moving your PCIE cables around. I assume your only using 2 one on each board, if your using 4 unplug 2 (if no plans to OC) and then power the supply back on. Reboots alone don't always fix S3's. I agree discards don't matter.

thanks for info.
after powering off psu and give it few minutes to rest all went to normal.
no dead chips.

is psu broken/ageing or it is antminer issue?
psu is corsair cx750 powering only this s3

You could test your power supply with this- http://www.newegg.com/Product/Product.aspx?Item=N82E16899261023&cm_re=power_supply_tester-_-99-261-023-_-Product but, I do not think its the power supply.

I have several S3's that range from B1-B6 and they all have their issues. All of my S3's have never shown Best Share, my B6-S3's do not show the correct fan speed, also all of them have given ASIC errors at some point (mostly when an overclock is attempted).