HP22S display compatible replacement

[mfleming]

(01-15-2019 01:11 PM)Didier Lachieze Wrote:  An HP 14B LCD should also be a good candidate for your 22S. However before sacrificing a 14B for a LCD transplant, and if your LCD issue is similar, you can try the fix described in this video.

I replaced a "cooked" display (large blackened oval in the middle of the display) of an HP-22S with a display taken from an HP-14B. The whole process was not too difficult, and there are clear instructions on how to open a Pioneer type calculator in the old articles section. Check here

http://www.hpmuseum.org/cgi-sys/cgiwrap/...ticles.cgi

After replacing the LCD I tried the approach outlined in the article Didier gave above, and the reflective backing did have the large oval spot. The LCD itself, as you can probably tell, is still perfectly functional. I didn't continue with the repair though, so if you give it a try I'm sure many would be interested in your experience and results!

Good luck,
~Mark