Topic: s5 not hashing full? (Read 646 times)

I have one S5 that is guaranteed to give me:
oooo first line all the way across

second line xxooooooo


Lower clock and soft boot corrects it on reboot sometimes.
Hard boot almost always corrects it.
Either correction, lasts 5 mins to a couple of hours

A severe underclock will correct it for the longest time, hours, maybe more depending on how low.

Checked connections
I have not swapped any parts yet.

My money is on the second / right hash board, but I understand it could be the controller or cable.

Simple, good information provided by Bitmain at their zendesk site:

https://bitmain.zendesk.com/hc/en-us/articles/204875015-How-to-diagnose-S5-hashing-PCB


Some people may find it useful to pull these down locally and grab one when needed.
It never hurts to remind experienced brains.

A side note:
Bitmain has a quick video giving the steps to address these types of issues quickly. Props for doing so to Bitmain.
I want to make sure I show I have affection for Bitmain's good points as well. I hope to always discuss the good and bad regarding the choices of miners.

**--If you find incorrect information in the videos which you think are serious enough to require discussion please post me a PM about them and maybe we can make a new thread somewhere. I have not vetted every inch of material by any means. Use your common sense and be safe. -period- and if possible be more safe with live power. Do not work with live power unless it is necessary. Personally, I do not think it makes anyone look cool because they worked with blah blah volts times amps. Why would you want to? It isn't on my list of goals to work with hot high amounts of anything which will kill me, but I tolerate the 120 / 240 / 480 pretty well.

If you do not understand everywhere the power may flow, do not change a circuit, install a breaker, or in general don't do anything but look, take pictures, and write things down at your main panel without some qualified help. Give the forum some details about your rig and people will be happy to give you many great suggestions on your S7 with a wide variety of side products and options.

If you do not understand where the power will flow when you flip the breaker / switch, or circuit on, then have someone qualified, even if you must pay. Start reading and practicing small time. Learn how to respect power even if you aren't interested in learning everything about it.

Your S5 (hashboards) is dying. I have several of them at the same condition as yours. Underclock may help.

ah okey.

Yeah i am going all the jacks, even 2x only,

i guess its the psu, what i know it dont perfrom so good under 50% load and 1c s5 dont do 50% load.


atm pluggin whit a s3 to load some the psu

clock the s-5 to freq 300 if it comes back up and all asics run your psu may be at fault.

I have heard of that psu doing wrong on an s-7

it could be it has an issue.

are you plugging in all four jacks?

when i run like 10 mins the other asic comes up, and stops hashing.

Was running on a rm1000 whit no problem. i have not been able to get it full working whit this psu

Currenlty on a server psu, dsp 2000 bb, first time i have tried this psu on antminer, was thinking that it might be the problem.


i dont hhave any other psu, a old bronze 620 psu that cant run it either.

What size psu are you running?  Many issues are addressed with insufficient power.

`So i connected my s5 latest batch wiith extra fin fans on the board.

The second board is showing --------------------------------------------------

I have tested them indiviuadully, and they both work, its the right side that is not getting up.

some times it show -000-000-x--x0--x-0--------

might be the controller ? i tought the cables but tested both on the sides and working..