[Yaesu] FT-5100 Problem#2

[Dave Maley]

Good evening again.
Well this weekend, I pulled out my old Beckman logic analyzer and started tracking down the scan command
in the FT-5100 and found the problem.   Between the display board and the CPU board is a small flexible
PC board that's used to connect them together.  This board has some of the lines open and some of them resistive.  Yaesu does not show this board as a separate part.  I suspect it was sold as part of a complete 
controller (CPU) assembly.  The board gets flexed every time the radio is opened to change the backup battery.
On this radio, I only get 3-4 years out of a battery, and I've had it for 13 years.  I suspect others have had this 
same issue.  Wondering what you did?  Thanks in advance
Dave    WA0ZZG