On May 14, 5:04*pm, Merciadri Luca wrote:
Hi,

I have some old HP 30s, and as every HP stuff, I like it.

The problem is that some strange guy threw water on it when I was at
secondary school. It does not perform correct computations anymore,
i.e. it does not deal correctly at all with powers, but there is also
a screen problem.

How could I repair it? I can still change the screen, but for the
calculations?

Thanks.
___________________
In hindsight, no buttons should have been pressed even after you wiped
off the exterior of the calculator. That is - no circuits should have
been allowed to complete - what happens when you press buttons on the
calc. The calc should be dismantled - if readily so - and allowed to
dry under a bright lamp or the sun. Reassemble and it *should* work
like new. That was all that was spilt on it - water?

-CC