HP-41 LCDs



#4

Can I replace a halfnut LCD from a fullnut?


#5

Ciao!

read please here , hope it helps.


.....seems, the answer, NO


Edited: 16 Mar 2013, 7:52 p.m.

#6

No they are completely different, and replacing the LCD in a halfnut is a big job. It requires lifting the keyboard PCB so all of the heat stakes have to be clipped back to allow for removal of the keyboard card. I have done it a couple times and if you want to go that route I would recommend that you not clip the heat stakes off flush with the board but rather trim off the edges of the top so that a bit of the top still is above the board. When I reassembled I secured the board with a drop of epoxy glue on the top of each of the clipped back heat stakes.

You should also be aware that there are ROMs in the hybrid circuit on the display module in a halfnut, so the CX display module is not the same as a CV, however the glass part of the display module is the same.


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP-41(CL): The easiest way to transfer FOCAL programs from a Linux PC to the HP-41 Geir Isene 13 1,080 12-05-2013, 02:40 AM
Last Post: Hans Brueggemann
  different LCDs used in HP41C? exschr 2 169 04-26-2011, 05:55 PM
Last Post: exschr
  Anyone want hp 41 to 41 infra-red data transfer? don wallace 38 1,767 09-21-2005, 04:17 PM
Last Post: don wallace
  LCDs on HP Calculators before the 41C Richard Garner 24 1,151 03-23-2003, 10:17 PM
Last Post: Michael F. Coyle

Forum Jump: