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+--- Thread: HP33E keyboard short (/thread-2387.html)
HP33E keyboard short - workspace - 11-03-2014 09:11 PM
Hi everyone,
a friend of mine gave me an HP33E, which he found in the dustbin (Recyclinghof in german :-) ). After cleaning the battery compartment it worked connected to a 3V power source. Unfortunately the second digit don't lit up, so I dived in the forum archives, found a way to open the calculator without damaging, cleaned all contacts replaced the power foil connector with a cable and put all together again. The digit lit up ... but, what is that, if I press 7 I got 4, - I got + .....
The fourth row seems to be shortend to the third row. I took it apart two times more, but can't find the short.
Is this happend to someone else as well?
I really like the led display and the slow speed of the calc - you can show actually that it works :-)
I appreciate all hints and tipps to bring back the keyboard working again .-)
Cheers
Ralf
[Edit logical typo]