Disassembly of HP-19C

[Jonas Sandstedt]

Yes indeed a mystery!
I remembered that Ignazio Cara taught me how to remove the flex cable from the HP-97 printer sub-assembly board by using a small tool several years ago. I re-used this knowledge here and it worked! I just cut a small plastic sheet that is relatively stiff and insert it on top of the flex cable such that the pressure is relieved of the flex cable conductors and then pull it all out of the connector.
When re-inserting, the tool should be positioned in the fold and then the flex cable is pushed back into place.
Ignazio used the metal cover of a floppy disc that was cut into shape, but a relatively stiff plastic sheet also works – see the picture.
I come back when something new happens.
best regards
Jonas