Topic: S19 90T Abnormal Hash Rate (Read 99 times)

I hope next time put the whole logs so that we can check the logs from the beginning to the end and make sure to put them inside the insert code tag it's a # button while editing your post.

Anyway, based on the error "power voltage rise or drop, pls check!" it looks like a PSU issue.
Do you have stable power?
Have you plugged the miner directly into the power outlet?  Try to plug if not.
If you use an extension with a thin gauge it won't give enough power so make sure that you have an extension with a big gauge that can handle 3300w.

And take note this unit only works on 200~240v if you have a 110v outlet then this won't work.

 chain = 2 set freq to 675.00
2023-02-16 00:48:30 enter mixed freq cfg
2023-02-16 00:48:30 pulse_mode = 1, ccdly_sel = 0, pwth_sel = 1
2023-02-16 00:48:30 start do_core_reset
2023-02-16 00:48:43 end do_core_reset
2023-02-16 00:48:53 set_voltage_by_steps to 1580.
2023-02-16 00:48:55 create thread pic_heart_beat_thread
2023-02-16 00:48:55 Init done!
2023-02-16 00:48:55 STATUS_OKAY
2023-02-16 00:48:55 start the cached job
2023-02-16 00:48:55 Version num 65536
2023-02-16 00:48:55 Mask num 0x1fffe000
2023-02-16 00:48:55 opt_multi_version = 65536, interval timeout = 2290648
2023-02-16 00:48:55 freq = 675, percent = 90, hcn = 3883, timeout = 2290648
2023-02-16 00:48:55 set_start_time_point total_tv_start_sys=170 total_tv_end_sys=171
2023-02-16 00:48:57 enable power watchdog: 0x0001
2023-02-16 01:17:46 30m avg rate is 91721.51 in 28 mins
2023-02-16 01:47:49 30m avg rate is 91375.94 in 30 mins
2023-02-16 02:17:52 30m avg rate is 91566.21 in 30 mins
2023-02-16 02:45:25 !!! reg crc error
2023-02-16 02:45:25 !!! reg crc error
2023-02-16 02:45:25 !!! reg crc error
2023-02-16 02:45:30 chain avg vol drop from 1580 to 1.90
2023-02-16 02:45:30 ERROR_POWER_LOST: power voltage rise or drop, pls check!
2023-02-16 02:45:30 stop_mining: power voltage rise or drop, pls check!
2023-02-16 02:45:30 uninit_temp_info
2023-02-16 02:45:30 do not read temp anymore...
2023-02-16 02:45:30 cancel thread
2023-02-16 02:45:30 cancel thread
2023-02-16 02:45:30 ****power off hashboard****
2023-02-16 02:45:31 temp monitor thread exit
2023-02-16 02:47:55 30m avg rate is 83989.76 in 30 mins
2023-02-16 03:02:55 chain 0 hash rate 0.00 low in 15 mins
2023-02-16 03:02:55 chain 1 hash rate 0.00 low in 15 mins
2023-02-16 03:02:55 chain 2 hash rate 0.00 low in 15 mins

Inlet temps 65 /outlet 76 and miner temp states normal consistently. Wouldn't I be getting an abnormal high temp error if that was the case? Thanks!

Where did you run these miners? Is it a closed room? If yes then it is due to overheating that is why the hashrate is drop or throttle.

You need to take the hot air out from the room to cool down the miner if the miner is very hot the hashrate will drop or the miner will stop.

And also, I suggest you to also try it to other pool like ViaBTC pool.

Ok Thanks will do.

Please share with us the logs of your Antminer, it will help to investigate the issue

You can use the "Insert Code" button when typing your reply here or pastebin to share the logs

Newbie question. Thanks for your attention!
I setup and downloaded latest firmware on my 2 new S19 90T's using Braiins pool. Everything was great for a while then I keep getting an abnormal hash rate and the units stop hashing. Seems to occur more often when both rigs are running. I have been running just 1 until I can get to the bottom of this issue. When I run both they will hash for an undetermined amount of time 1-2hrs. ish then 1 will go down I will restart then soon the other will stop hashing then back and forth. I had 1 hashing for as long as 2 days before an issue occurred but there is no real pattern to it, it's more frequent when both rigs are running. Could this be my network? Or could it be the pool? I appreciate any input just trying to keep hashing and troubleshooting in the right direction. Thank You!