Hello..I have an old denon dra 425r receiver. The left channel cuts
out...for awhile playing with the vulome knob helped. I also cleaned a few
times..which also helped for awhile...but now it seems to do it more
often...Is this problem worth repairing?....I took it apart and the volume
knob looks fairly easy to replace...if that is what is where the problem is.
I have had this happen to several stereos so it must be a common problem
once they get to be older.....any help would be greatly appreciated..advice
etc...thanks

steve