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