|HP-29c keyboard dead 2nd row problem|
Message #1 Posted by Xavier A. (Brazil) on 11 July 2012, 9:14 p.m.
Until today, my beloved HP-29c was behaving like a charm - I just entered in a 94 steps program a week ago, and made a lot of calculations with. Everything was okay.
Today I realized the 2nd row was not reacting at all. Neither x<>y, nor Rd, STO, RCL nor Sigma+, and even the 2nd & 3rd functions are like dead.
I shall open my HP next week-end. I searched the forum to find any message about this problem exactly, but in vain. I saw some old but precious advices about cleaning, I'll apply them. I read also something about HP-67 cicuitry, I think it could help.
What can it be?
Thank you for any advice!
P.-S.: just to add that my program contains instructions STO & RCL and the calc executes them correctly.
Edited: 11 July 2012, 9:33 p.m.