Band switch problems

[DFREY]

     >Argosy Design Problem
     >...while you have the bottom cover off, clean and re-grease the band 
     >switch index mechanism.
     
     A few words which can be applied to the bandswitches in all T-T rigs.  
     The white plastic CTS switch wafers, either the axial or radial PC 
     mount style, are almost never the cause of b/s problems.  Sometimes a 
     bad solder joint at the board, a loose coupling, or a bad crystal will 
     be the culprit.  NEVER clean or lubricate the switch wafers.  They are 
     protected by a special lubricant/anti-oxidant which if removed, will 
     cause failure of the switch function in a short time.  A little new 
     grease on the chassis mounted switch detent of an old radio is good - 
     Jim's comments are perfect.
     
     Dick, K4XU