Rowe R-80 Search Problem

I could really use some ideas. My R-80 will play every letter except A & B.
It searches but never selects when these letters are pushed with any
number. I've checked for obvious breaks, cleaned every contact I can find,
checked the contact of the wipers and visually checked all of the plugs.
Does anyone have any idea where the problem could be hiding?

On Sun, 10 Sep 2006 18:04:45 -0400, "mmplain"
wrote:

I could really use some ideas. My R-80 will play every letter except A & B.
It searches but never selects when these letters are pushed with any
number. I've checked for obvious breaks, cleaned every contact I can find,
checked the contact of the wipers and visually checked all of the plugs.
Does anyone have any idea where the problem could be hiding?


It has to be one of the connections from the button contacts to the
search unit, or a crack on the board to the AB segment. It could be
something really really weird like a very poorly adjusted wiper (on an
angle on the shaft or something) that rises slightly above the pcb at
that contact point, but this is not very likely. (or a burnt or
damaged contact point too)