Re: HP-11C display decay Message #4 Posted by Raymond Del Tondo on 17 Apr 2008, 12:47 a.m., in response to message #3 by db (martinez, ca.)
Hi,
there's at least one variant of the Voyager PCB layout where the display isn't soldered.
In this variant the contact between the LCD and PCB is made
through the awful 'zebra stripe' type rubber connector bands,
and the LCD housing is held in place by a metal clasp.
This PCB variant normally is the one where you have to remove _all_ heat stakes
between the PCB and the upper calc housing first to even get to the LCD...
I did this more than once, and I don't suggest it to the average user;-)
However the PCB variant where the LCD sits on it's own small PCB may be easier to handle,
at least if you swap the whole small PCB, not just the LCD unit,
since the small PCB holding the LCD and ROM is connected to the kbd PCB
using a small and fragile one-time connector pad.
This connection can be made at least twice if you're careful enough.
The limitation is that you have to find the suitable replacement, with the suitable ROM...
HTH
Raymond
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