This is what your potentially looking at.
Your input panel needs to be serviced. Please try to change the AC outlet location first before attempting the service yourself. If your still experiencing problems, then remove the front panel to locate the the soldered joints behind the power button. There is a relay which may be worn and can be changed by you. You may find the area covered in rust and oxidized. If this is the case, then we have found the root cause behind your problem and will need to change out the bad part. Please reply with any question