Have a s45hp sittin on the desk bout 2 months, no probs up till now. Out of the blue, turned it on yesterday, wham, LSB has 70w carrier (no swing), USB has 10w carrier,(swings to 70w) AM and FM Carriers are normal 16w (swings to 70w). Changed mics, coax. pushed around on the board no change. Any ideas or trustworthy repair near alabama?