[lipfordm]

I might add this link as well for the schematic as it covers the front end of the radio.  Welcome as well.
First, if you have not well cleaned the band switch decks and the pushbutton switches I would start there.
Best,  Jerry

http://www.nostalgiaair.org/pagesbymodel...013415.pdf

Thanks for the links, but I do have schematics which were useful when I was re-capping.  I did clean the rotary band selector switch contacts as best I could without disassembling the switch itself. 

Because I don't think I'm the first person who has worked on this radio (although my mother swears no one has), I ohmed out all the connections to the switch in all four positions.  Other than finding one error in the schematic, everything checked out OK.