Help! I seem to have destroyed my 41CX after 14 years of TLC!
I had an IR module, an Advantage pac and an Extended I/O module plugged into three of the ports, and then plugged an HP-IL module with the printer enable switch set to ON into the fourth. I turned the calculator on, 0.0000 was displayed as expected, but none of the keys would work, include the on-off rocker. Suspecting that there was a clash between the IR module and the printer element of the HP-IL module I set the printer enable switch to off. I could then turn the calculator off. I removed all the modules and tried to turn the calculator on again, but nothing happened. I've tried resetting it every which way but to no avail (on-clx, shorting the battery contacts, etc.)
Some questions:
Have I lost my friend for good?
If not, what should I try next?
Why should doing what I did have such a dramatic effect?
Any messages of condolence would be gratefully received.
Steve