02-28-2016, 11:46 PM
I solved the problem! The previous tech was kind of a slob - he installed a spring on the idler pulley for the belt, but did not consider the fact that it was millimeters away from touching a lead on the volume pot! I removed the spring (I'm getting a new belt soon anyway) and all the popping has vanished! And boy does this ZENITH (not "Brand Z") sound great!
Slave to an RCA Victor CTC-25