I have a question about the balance on my Pioneer stereo
I have a vintage Pioneer SX 450 stereo. It has always worked great but I moved about 3 years ago and it's been boxed since then. I just plugged it in and the right speaker is very crackly. I replaced brand new speaker wire and the polarities are all in line. The left side works perfectly. The speaker is not the problem as I switched them and the right balance is still off. When I disconnect the speakers and listen through headphones everything sounds good. I pulled the knobs and top off and sprayed some 3M dust aerosol dust remover everywhere which didn't seem to help. Thank you for any input.