Any hope for that derelict HP-25?

[PANAMATIK]

(11-15-2017 08:18 PM)Benoit Maag Wrote:  Bernhard,

Just to confirm: do you need to cut all the post tops to separate the keyboard from its PCB, or just the ones that should show with a green arrow?

To separate the keyboard from the PCB you have to cut all tops. I recommend to fix all of them with glue. I observed that the middle keys had a soft feeling after some time, therefore I added glue to all of them (also the not green marked) at a later time. This fixed the keyboard and key feeling durable. Be also careful not to glue them too tight together. I had another case were the two slider switches moved a little bit hard after fixing. A small amount of silicon grease at the slider contacts can be used.

Bernhard