All of your hashing board are too hot that leads to high temp protection that is why the hashrate of your miner is drop.
Check your environment temp if you run your miner in hot place your miner exceeds higher temp and it will automatically reduce the hashrate.
Try to improve your air circulation in your room, hot must be out and add some AC to decrease the temp of your miner.
Topic: Antminer S9 LOW Hash Rate (dropping hash rate) (Read 229 times)
I would say you have a board in the danger zone. 102c is right up against the thermal cutoff. Take a look at your kernel log and see if it is complaining about being too hot.
When I power on my antminer it starts at the normal 14 TH/s but then will immediately drop drastically and become basically nonexistent and will continue to go down the longer its on. I took screenshots of it at different times that its been running and if you look at the time elapsed with each you'll notice the longer its on the lower the hash rate is. Upgrading the firmware didn't fix it either. If anyone knows what the problem might be please let me know! The PSU I'm using the EVGA 1600w p2.
https://gyazo.com/4b0d917b52d447b26e78c55503b90028
https://gyazo.com/8625bdaa4e220cd8ad12cc8d7f1e3376
https://gyazo.com/278c8218e4503cd2909abae65f2849c6
https://gyazo.com/4b0d917b52d447b26e78c55503b90028
https://gyazo.com/8625bdaa4e220cd8ad12cc8d7f1e3376
https://gyazo.com/278c8218e4503cd2909abae65f2849c6
first off firmware upgrades should never be done without consulting people for other solutions.
Since you did new firmware I am not sure it is the same problem.
But let us pretend the firmware upgrades did nothing good or bad.
It looks like the psu has enough balls and is not the problem
So I ask how are you internet connected?
wifi?
a cat 5 cable over 15 feet?
If you are wifi do a eth cable
If you are eth cable do a better quality
here is a good one.
https://www.amazon.com/dp/B01ELMYKQW?m=A1R6CPF0VN02MD&ref_=v_sp_widget_detail_page&th=1
he has many lengths.
you could also use 2 of the 3 boards and do not connect power cables to the third one.
if 2 boards work you may have a weak psu.
bad eth cables ---- switch eth cable
weak psu's _------ try my idea
bad controller ---------- buy a new part
bad hash boards ------- buy a new part
When I power on my antminer it starts at the normal 14 TH/s but then will immediately drop drastically and become basically nonexistent and will continue to go down the longer its on. I took screenshots of it at different times that its been running and if you look at the time elapsed with each you'll notice the longer its on the lower the hash rate is. Upgrading the firmware didn't fix it either. If anyone knows what the problem might be please let me know! The PSU I'm using the EVGA 1600w p2.
https://gyazo.com/4b0d917b52d447b26e78c55503b90028
https://gyazo.com/8625bdaa4e220cd8ad12cc8d7f1e3376
https://gyazo.com/278c8218e4503cd2909abae65f2849c6
https://gyazo.com/4b0d917b52d447b26e78c55503b90028
https://gyazo.com/8625bdaa4e220cd8ad12cc8d7f1e3376
https://gyazo.com/278c8218e4503cd2909abae65f2849c6
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