This could be a failing tube issue. Tubes tend to act like that when they are on there way out.
Try to repost this thread under " Vintage Tube Receiver pops and crackles " and see what happens. You should get some feedback from the tube guru's.
Hope this helps.
Just my $.02
Try to repost this thread under " Vintage Tube Receiver pops and crackles " and see what happens. You should get some feedback from the tube guru's.
Hope this helps.
Just my $.02