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+--- Thread: HP-42S work-around for sticking to low contrast LCD problem (/thread-162340.html)
HP-42S work-around for sticking to low contrast LCD problem - Lyuka - 01-22-2010
Hi all.
(It might be good news for DavidShenk.)
I recently bought an HP-42S which has LCD contrast problem that seems to be identical to the case of the previous thread
'An HP-42S fix success, and a contrast problem'.
I tried another way to generate the LCD bias voltage, and the work-around seems to work well so far.
for more information -
A work-around for sticking-to-low-contrast LCD problem of the HP-42S
Regards,
Lyuka
Edit: URL to the image corrected.
Edited: 1 Feb 2010, 5:03 p.m. after one or more responses were posted
OMG:Re: HP-42S work-around for sticking to low contrast LCD problem - Lyuka - 01-29-2010
OMG
What I bought (at Yahoo JAPAN auction) and repaired is identical to DavidShenk's.
SN=2942S30206
Quote:
This is a version A with the flush display, S/N 2942S30206 and it passes it's self test.
It's a small world.
Re: OMG:Re: HP-42S work-around for sticking to low contrast LCD problem - DavidShenk - 02-01-2010
I take a few days off checking the forum and when I come back you've got my calculator! I did not realize you were the buyer. I had reached a dead end and just couldn't do anything else with it.
I'm glad you were able to find a fix. You always do a good job documenting what you do, and I think it will be a good help to others in the future.
Dave