I have a Sony XR-c2200 which has exhibited a lot of electronic noise
lately. The antenna goes through a pass-through (RF Modulator?) on a
Sony 434RF Cd-Changer. When I take the pass-through cable out of the
mix the sound cleans up just fine.

--1st, am I on the right track
--2nd, If so, can the pass-through be replaced without buying a whole
new CD-Changer system

Thanks in advance for your help and advice

Clay