If I read your original post right, you are saying the radio will not scan. I used to have the same issue with my '96.
It would just sit there. Only would happen if I didn't use the scanner for a couple of months.
What I basically had to do is take the scanner apart, remove the keypad, and wipe the rubber "fingers" that hit the circuit board down with alcohol. All the disassembly involved may not a task for the faint of heart, but it did remedy it every time.