Thanks for all the help on my last post. I fixed the problem with the hum. And I was wrong and felt like a dumbass. I did put the caps in backwards. Ive been trying to teach myself electronics for about a 1 1/2 years and even though I thought I understoud electrolytic caps, I was thinking the - stripe was the + indicator. Lesson learned, I'll never make that mistake again. Luckily, I didnt wreck the caps or anything else, I hope. I put them in the "CORRECT" way and the hum is gone. It sounds clean and crisp. However, The drive channel switch doesnt change from drive to normal. It is stuck on drive. I took the switch out, checked it and it "seems" fine. Is there anything else that it could be? I'm thinking that it has to be the switch. When I push it, nothing happens. Any advice.