Antminer L3+ series hashboard repair guide and help needed

Job ID: 30805722

Budget: $30 – $250 SGD

I have about 4 L3+ hashboards which need repairs and a bitmain PSU which is no longer working. I am looking for someone experienced in repairing these who can guide me or remotely carry out the repairs. I am currently unable to program the hex files on my own as i am not familiar with it, but have all the tools required.