Hi everybody... I need some help repairing an old Onkyo A-7050 that belonged to my dad. I've done all my best to find the service manual with no sucess. Can't find it anywhere. Right now all I get from the amp is a lot of noise, hum and distortion. I guess it needs recapping of thebold electrolythic caps because it's from the early 70s. If anyone has access to the service manual it would be much easier and of great help.