If your power source is 110v the miner will run abnormally because Antminer s9 is made to run at 240v, not in 110v.
The PSU APW2 never heard this PSU before are you talking about APW3 or APW3?
Can you try to "
Test hash board one by one"
If the hashboard running fine in the single hash board it means that the PSU is not giving enough power.
Solution: you need to buy a step-up transformer to be able to run them at full speed.
Thank you good sir, I will have to look into a step-up, perhaps.
I did mean APW3 for sure lol.
I can't seem to have any of the 3 cards remain stable and mining for very long. Eventually they start to restart and go back down to 0GH, where it seems to idle until it wants to mine again, and repeat the cycle.
I am not sure what is going on anymore but I have some time today and tomorrow to try.