Re: Missing segments on LCD of HP41C Message #3 Posted by Tony Duell on 26 July 2001, 6:46 p.m., in response to message #1 by Daniel Diggelmann
It's not hard to remove the LCD module from a non-halfnut machine (which is what this sounds like). Take it apart as usueal, remove the little support strip at the top edge of the display,
desolder the contacts from the keyboard PCB and remove the complete display module. Be warned that the display drivers are CMOS and static-sensitive.
Once you've got the display module out, it's worth trying to repair it by uncliping the clips on the long sides of the module. Then the LCD glass will come off the hybrid, they're connected by zebra-strip connectors. Clean all the contains (LCD glass, PCB, zebrastrips)
with propan-2-ol, and put it all back togther. You might find the segments work again.
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