Re: different LCDs used in HP41C? Message #2 Posted by Håkan Thörngren on 26 Apr 2011, 5:47 p.m., in response to message #1 by exschr
There were at least 3 different LCD used for the HP-41.
On the early ones (I have an early 1981 CV), you can see the unlit segments quite easily depending on how the light falls on it. On the second generation, seeing the unlit segments is a lot harder and they also look brighter. This LCD was at least in production machines around 1983 (I do not own any machine with it) and later (1985/86) the rounded corner halfnut LCD was introduced.
I think your yellowish are from the first generation, but I do not think they are that bad or maybe they have gone worse over the years?
I think your 2209S machine have had its LCD (or bottom) swapped.
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