May I have a manual for this unit please. Customer says unit has blown fuse on back of refer after power outage, Says he wiggled it to get it running. Think myself that his ploblem is a diode or relay that he thinks is a fuse. Insists that he has 2 fuses on back, one a 5 amp & another that is 15amp. A manual of some sort would be nice before I go. Thank you Patrick