Bitmain power supply repair for hashboard (S9,T19,Z15,X3,S17E,T17E,D3,L3+,S9,S7,S5,L1,S3,S1SE,S9K)

How I fixed my Bitmain apw3++ power supply. If you have Fan issue : Check whether the cooling air duct of the PSU is blocked or not. If blocked, clear the blockage. Check whether there is dirt accumulated in the PSU or not. If dirt is found, remove the dirt. Check whether the output of the PSU or the ambient temperature exceeds the data in the power limit curve or not. This could be caused by high temperature or overload .