RadioShack Pro-51 keyboard repair?
 

I realize that this isn't a repair group, but has anyone here had experience
cleaning the membrane keypad on a scanner? My 15 year old Radioshack Pro-51
works fine, except that I have to press harder than normal on the keys to
get the scanner to operate. I haven't opened it up yet, but the keypad may
be the conductive type that touches contacts on a PC board. Does that sound
right, and can the keys or PC board be cleaned? Thanks ahead of time.

N.Morrow