I was wondering if anyone had any diagrams available for the main circuit board in my bose amp, have gone through the entire amp and there are a couple of resistors burnt on the main board but they burnt bad enough I cannot tell what they were exactly to replace them? Any help anyone can give would be greatly appreciated. I know you can send it away and have it refurbished but I kind of enjoy the challenge doing these things myself. BTW the amp part number is 140 820 00 89.