Bitcoin Forum

Hi gents

Assistence required.I have an S9 unit that will not hash, at first it was reporting a fan error, fan replaced, error is still there. Then I had an issue with power supply, replaced it, now it startsm but it will still not hash. LEDs on the board are a strange mix
-on one board nothing is lit
- second board has one red LED
- third board has both red LEDs

Log

https://i.postimg.cc/G3jgrm6Z/IMG-b14cad583095b0fc1061664e9c7b5ceb-V.jpg

Your assistance is appreciated

most likely two issues.

controller is dead or dying or has a corrupted flashed firmware.

one hash board is dead.  the one with out the light.

troubleshooting involves having a good s9 that works fine.

if you have multiple s9's that work let us know.
if you have just the 1 s9 it kind of is not worth fixing.
you could just buy one on eBay

https://www.ebay.com/itm/Bitmain-Antminer-S9-13-5-TH-S-USA-SELLER-SHIP-SAME-DAY/202611906670?

or here

https://bitcointalk.org/index.php?topic=5116210.0

https://bitcointalk.org/index.php?topic=5102346.0

make sure to ask about escrow.

It is better if you can post the whole logs here than just image.

According to your logs, it seems that you have some bad chips from your 2 hashing board.

I recommend you to test them one by one if you don't have extra s9. Then let's see if what hashing boards are damaged.

Replacing hashing board might solve your issue.

---

Edit:
Try to flash the hashboard with PICKIT 3 there is a guide here on the forum you can find it from here repair a T9 + after a bad firmware (lost chain) (https://bitcointalk.org/index.php?topic=5032987.0)
This method mostly used if your logs show PIC error or use to revive dead hashboard.

does the intake fan start a bit late? i had a similar issue once as regarding the descption of the boards's leds, i can't really remember the kernel logs, it turned out that the firmware was bad, so i had to flush another one, i think you should go to bitmain's website, find the exact model you have "s9/s9i/s9j" and try every listed firmware, there is a very good chance this problem will be fixed with one of the firmware.

Sounds like a control board issue. Can you copy and paste the kernel logs in a code block here or on pastebin so we can take a look?

If you have a /tmp/searcherror message you can re-flash the firmware or do a IP report reset to fix it.

I have 4 more units that are healthy, and will first try with flashing the unit. Will revert with findings.

If it doesn't work you can try to test your hashboard to other working miners if the result is fine then the problem is inside your control board not in hashboard. But if it shows some weird result like bad chips from other working control board well your hashboard is damaged.

Antminer-S9-all-201711171757-autofreq-user-Update2UBI-NF.tar.gz (https://file11.bitmain.com/shop-product/firmware/Antminer-S9-all-201711171757-autofreq-user-Update2UBI-NF.tar.gz)

Or test this firmware below.

Antminer-S9-all-201812051512-autofreq-user-Update2UBI-NF.tar.gz (https://file11.bitmain.com/shop-product/firmware/Antminer%20S9/Firmware/00720181206230950692dA4HgFnC067E/Antminer-S9-all-201812051512-autofreq-user-Update2UBI-NF.tar.gz)

hi, the problem is VERY easy to find !!!

at last line on your kernel log :

"check FAN Speed Error" , 720 is very low !!! the miner are need ninimal 3000trs at start ! and idéal is 6000trs or more ... Your problem come only with FAN or Controler board !!! no problem with hashboard ...

If you fan speed is at 720 RPM it means that fan is dead and only being turned by the pressure of the other intake fan