Keyboard problem on HP-97

[rea5245]

Hi. I have an HP-97 that mostly works. However, sometimes when I hit the divide key, it clears the display instead of doing the calculation (perhaps it's causing the calculator to reset?). A friend of mine has two HP-97s and he says he has similar problems with different keys, and that cleaning the contacts has not helped.

Is this a known problem? Is there a known remedy?

Thank you,
Bob