In the last few months I repaired the card readers of two HP-65s and one HP-67. The most difficult task for me during this was to reassemble the calculator after the repair.
It seems that the keys are now not so tight on their metal domes as they were before. When I shake the calc, the keys make some noise. Is this normal? Did a brand new HP-65 also make noises when I would have shakened it?
What do you think? Do you have tips for reassembling?
Michael