Heathkit Ar-15 one channel weak


2008-03-27 12:55 pm
I have a Heathkit AR-15 with a weak channel. On a scope, using a sine wave input, the output shows a square wave with sharp peaks at the edges on top and bottom. The unit worked when it was put in storage for 10 years. I have replace caps and transistors with NTE substitutes for lack of others. Any clues?
Thank you.