" The click is from amp and only noticeable when not playing music. I did some web research and most ppl say it is related to protection circuit been activated. They are old amps but I just love them."
Before you send it out for repair, you may want to go over your system. Given the age of the component in question, I would check all the cables, including the power cord, for any type of corrosion at all the contact points, and for damage.
Before you send it out for repair, you may want to go over your system. Given the age of the component in question, I would check all the cables, including the power cord, for any type of corrosion at all the contact points, and for damage.