I was given an S-120 that is supposedly non-operating. After some research it appears that it is a variant on the All-American 5 tube with a selenium rectifier instead of the tube rectifier. I will try bringing it up with my variable transformer and see if it works. Even if it works, I am probably going to replace the rectifier with a modern silicon diode and resistor. I suspect the filter caps are bad since it is nearly 50 years old. I have found suggestions to replace with 200+ volt capacitors. The values appear from the schematics I have found (copies) to be 60-40-40. I am having trouble finding a source for these. Any suggestions? I tried the Fry's that is about 30 miles from here and they didn't have any parts that would suffice and with the demise of Radio Shack stores in my area which might have had the rectifier and resistor, I want to order all parts at the same time.