Dear Sir,
I am expert in electronic circuits repair in general, repaired so many electronic appliances, and devices which has electronic circuits, and i already have an instruction file i made before for client here, to help repairing Modern power supply board, including explain of the circuit, the probabilities of causing the fault, and how to fix, i can send to you to take a look at, when you message me
also, i will need clear pictures of the board you have with fault, from both sides, and service manual if yo have of the machine where the baord is installed in, so i understand its function, see its components and predict the cause of faults and how to troubleshoot and fix
waiting your response,
Thanks