How to power on/off L3 and S9?

[fer344]

I am having problems when I power on/off my L3 and S9. My bitmain power supply are stop working, luckly I received tripled in my bitmain order and I still replacing them without problems.

The bitmain power supply power on and its fan works but do not power on my L3 or S9. If switch power supply L3 and S9 works fine.

Dunno if doing it right? Is there any protocol? Need I follow some steps in order to power on/off?

Thanks in advanced.

[1714155853]

1714155853

[fanatic26]

One really odd thing I have noticed with the APW3 pSU. Sometimes the fans on the PSU will come on but the psu will not output 12v. What I do to resolve this is unplug the PSU and wait 30-45 seconds for the fan to stop running and all the excess power in the caps to be drained. Then the PSU should power right up the next time you plug it in.

[Raymond_B]

I am having problems when I power on/off my L3 and S9. My bitmain power supply are stop working, luckly I received tripled in my bitmain order and I still replacing them without problems.

The bitmain power supply power on and its fan works but do not power on my L3 or S9. If switch power supply L3 and S9 works fine.

Dunno if doing it right? Is there any protocol? Need I follow some steps in order to power on/off?

Thanks in advanced.

Are you 110v or 220v?

[fer344]

220V thanks for the responses!

One really odd thing I have noticed with the APW3 pSU. Sometimes the fans on the PSU will come on but the psu will not output 12v. What I do to resolve this is unplug the PSU and wait 30-45 seconds for the fan to stop running and all the excess power in the caps to be drained. Then the PSU should power right up the next time you plug it in.

I think the problem is in the PSU because It did not power on control board...



The question is...Is correct power on/off PSU throught switch?

[BitMaxz]

My guest you receive a defective power supply since you have 3 power supply and the other power supply works fine then the 1 power supply is defective the only thing you can do now is to contact the bitmain support about your power supply then ask them if you should send it back to bitmain to replace a new one or there's other way to work the psu as new one..

I also suspected the cables maybe its not fixed properly from the psu that's why your miner not running. .

[ccgllc]

One really odd thing I have noticed with the APW3 pSU. Sometimes the fans on the PSU will come on but the psu will not output 12v. What I do to resolve this is unplug the PSU and wait 30-45 seconds for the fan to stop running and all the excess power in the caps to be drained. Then the PSU should power right up the next time you plug it in.

I extensively had this problem with the PSUs were cold (like 40F).  Once they get to about 55F the majority work fine.  Had a couple out of 80 that wouldn't start until they hit 60F. 

Sounds like yours were on the edge, and plugging them in allowed them to warm up "just enough".

[fer344]

One really odd thing I have noticed with the APW3 pSU. Sometimes the fans on the PSU will come on but the psu will not output 12v. What I do to resolve this is unplug the PSU and wait 30-45 seconds for the fan to stop running and all the excess power in the caps to be drained. Then the PSU should power right up the next time you plug it in.

I extensively had this problem with the PSUs were cold (like 40F).  Once they get to about 55F the majority work fine.  Had a couple out of 80 that wouldn't start until they hit 60F. 

Sounds like yours were on the edge, and plugging them in allowed them to warm up "just enough".

I think that was the problem... Now all works fine!