the sound is not right, humming and noise is what I get. I do get all the sounds and tones but a lot of hum and noise. In test mode when I do a all lamp test the hum in the speakers go on and off. Do you think that I should rebuild the rectifier board or replace it? It kind of looks like some one else has been in there before. Or is is some thing else. I'm going to check the voltages on the rectifier and sound board.