HP-25 resurection project

[cjmcc]

(12-01-2020 05:36 PM)Maximilian Hohmann Wrote:  ... Here is a link to a photo of an HP-25C where the display connections are annotated (it was made by a forum member who unfortunately passed away some years back): http://home.citycable.ch/pierrefleur/Jac...25_WEB.jpg
The "K1" to "K12" connections are the cathodes of the individual digits and "a" to "h" are the anodes of the segments and the decimal points. With that it should be possible to check which segments are still working. Mind you that there are no original replacement parts. You may need to cannibalise another calculator of that series to fix yours. ...

Thanks for the link. Fantastic set of images detailing the innards of an HP-25 that should be invaluable when I get around to trying to fix the display of my HP-29C. The top of the website is http://home.citycable.ch/pierrefleur/Jac..._intro.htm .

-Chris-