[HP-35s] Are bad keys fixable?

[Martin Hepperle]

(08-23-2016 01:26 PM)Marcio Wrote:  Hello all,

My 35s has gone 'non-programmable'. The R/S key died this morning. I searched the old forums and saw quite a few complaints about 35s missing keystrokes and dead keys but none mentions anything about fixes.

Does this inconvenience have a solution or should I just get another machine?

Very much appreciated.

Hi,

I had some success in "fixing" a key on a HP35s bought off eBay. Its "+" key required a stronger press to register. I flushed the keyboard with a larger dose of alcohol (pure isopropanol - beer, wine and whiskey are less suitable). Used a syringe to squeeze the liquid between key cap and front panel a few times, shook droplets off and left to dry.
Also worked for a HP 10B with a non registering key. At least worth a try.

Martin