Hello, I've got a strange problem with a 41C that I'm trying to revive. The display won't display (completely blank) but the keyboard responds and the calculator can produce audio (via TONE and BEEP). My initial thought was that there was something wrong with the display. [duh].
Wrong. Upon ringing all the leads and surface connections, I tried putting in another full-nut CPU board from a CV and, lo-and-behold, the display works. So, it seems like the CPU board I've got works with respect to keyboard input, printer output, audio, etc. -- except for driving the display. Has anyone else encountered this problem before?
Thanks for any suggestions!
Boris -- bg@cse.msu.edu