Starting a 2245 rebuild, prob w/Aux

[MossFit]

I'm starting with fully recapping and replacing some recommended semi's on a 2245.
I've noticed that both channels work ok on AM/FM/Phono/Tape but the Right channel is out on Aux. Does Aux input go thru a different board than the others? (Decoder board for example) Can defective caps only effect Aux vs others?
My plan is to recap and de-ox everything properly before concluding anything, but wondered if any of the pros out there would venture an educated guess on what is the most likely problematic board or culprit before I got there.

Thanks

 

[rBuckner]

Let me be the first! Start with the DeOxit treatment of the function selector switch. When it's time to clean the pots, it's best to use Caig FaderF5 as some have reported DeOxit D5 can harm the carbon resistance track.

 

[EastPoint]

Dirty switch or a broken wire (less likely).