HP Forum Archive 13

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HP-41C LCD Message #1 Posted by Terry on 10 Aug 2003, 8:12 p.m. okay, I corrected it to LCD - thanks. I have an HP-41C that I kept in a closet for several years when I did not need it. When I finally needed it again, I found the LCD has a brown haze to it. But it looks more like something under the display cover (if there is such a thing). I would like to know if that is true, that there is a separate cover protecting the LCD, and if I can get to it easily for replacement or cleaning. The repair info posted here does not go into removing the LCD, so I do not know if I can and whether or not the risk of having a non-functioning calculator would be worth it. The only thing bothersome about it is that it looks dirty. Edited: 11 Aug 2003, 7:41 p.m. after one or more responses were posted

Re: HP-41C LED Message #2 Posted by Randy Sloyer on 10 Aug 2003, 8:44 p.m., in response to message #1 by Terry Refer to Dave's photo to see which model you have: If it's a half-nut, you're out of luck, the LCD cannot be removed. If you're lucky enough to have a full-nut, you can desolder the LCD and remove for cleaning.

? There are no LEDs on a 41C Message #3 Posted by Mike on 10 Aug 2003, 9:01 p.m., in response to message #1 by Terry The 41C has an LCD display.

Huh? Message #4 Posted by Randy Sloyer on 10 Aug 2003, 9:18 p.m., in response to message #3 by Mike I thought it was a "Luminosity Echo Device"

Re: ? There are no LEDs on a 41C Message #5 Posted by Vieira, Luiz C. (Brazil) on 10 Aug 2003, 9:29 p.m., in response to message #3 by Mike I replaced all LED occurrencies for LCD and it fit fine. (in the text, of course) Luiz (Brazil) Edited: 10 Aug 2003, 10:49 p.m.

yeah but there should be Message #6 Posted by Norm on 11 Aug 2003, 4:09 p.m., in response to message #3 by Mike yeah but there should be LED's, for a 41C display.

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