I bought this unit about two years ago. It started by poping off and on making lots of noise. It done this about 30 mins to 1.5 hours on. I sent it back to be tested and fixed, they sent it back saying it was ok and I should check my wiring. Such as crossed wires and etc. I have done electronics all my life, and I know what I was doing. I took it home and it strarted the same thing again.Later on it quit, and I moved into a new home and one day I could hear the fan on, but no power to the front of the unit. So what could be the problem? I checked the circuit board and it seems fine, no burns, or anything out of place. Any help would be appreciated.
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