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+--- Thread: Sticky Topcat (HP-97/HP-91) keys (/thread-11542.html)
Sticky Topcat (HP-97/HP-91) keys - Dave92F1 - 10-06-2018 08:00 PM
I recently bought a HP-91 on eBay, in great condition except the "0" key was very sticky.
I was going to try to lubricate it, but discovered that a good blast of canned air (from both sides, but without disassembling the keyboard) fixed it 100%.
Probably a speck of dirt in there was making it sticky.
I hope this helps somebody.