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Title: Bitmain APW7 PSU fan is spinning normally but has no 12 V output Post by: Scorpyy on July 17, 2019, 03:28:24 PM Recently one of my miners stopped working, was unable to power it on, was just giving me red flashing light on fault.
I used bitmain's troubleshoot guide and it shows that my PSU is faulty. When i replaced with a good working PSU, miner booted up normally. I proceeded to test the faulty PSU and tested it with multimeter. Multimeter showed results that varied from around 3.90V to 4.30V. I am familiar with PSU's protection mode, and i left it offline for like 10 minutes and then for couple hours to try to boot it up again - same results. But could it be stuck there somehow? Does anyone have any clues? I am curious is there anything i can do to fix it? Title: Re: Bitmain APW7 PSU fan is spinning normally but has no 12 V output Post by: HagssFIN on July 17, 2019, 05:23:14 PM Don't fix if you are not a prosessional.
There are deadly electric charges in the capacitors! Title: Re: Bitmain APW7 PSU fan is spinning normally but has no 12 V output Post by: BitMaxz on July 17, 2019, 06:33:14 PM There are some guide directly from Bitmain to troubleshoot the PSUs you can follow this "PSU Troubleshooting Guide (https://support.bitmain.com/hc/en-us/articles/115000216014-PSU-problems-and-solutions)"
If none of the method above and the solution works there is a problem inside the PSU mostly a shorted capacitor so you need to replace the shorted capacitors or if not try to clean the whole PSU it sometimes solves the issue by cleaning and removing dust and corroded/rusty parts. Title: Re: Bitmain APW7 PSU fan is spinning normally but has no 12 V output Post by: Artemis3 on July 18, 2019, 05:11:23 PM Don't fix if you are not a prosessional. There are deadly electric charges in the capacitors! Or discharge them first: https://m.wikihow.com/Discharge-a-Capacitor Title: Re: Bitmain APW7 PSU fan is spinning normally but has no 12 V output Post by: Ruso21 on August 14, 2019, 10:27:42 AM I just got a new miner with this PSU and unfortunately I have the same problem.
fan spinning but not giving 12v. It was connected on 120V or 220V without any 12v output, also I used a tester. somebody had the same problem??? |