I have been using my trusty HP-45 daily but I am having trouble with flakey contacts in the keyboard.
I disassembled the calculator and cleaned the switch contacts with an electronic non-lubricating cleaner, followed by a lubricating type. Unfortunately the contacts are impossible to get at, and this didn't seem to help much.
Does anyone have a method of cleaning these switches?
I did notice a little sticker inside saying that back in May of 1976, HP did this for me, but I think it needs it again!!
Thanks,
Steve
RPN'g since 1975