Re: HP-42s keyboard error -- Fixes? Message #6 Posted by Paul Brogger on 14 June 2002, 5:19 p.m., in response to message #3 by Ron Ross
I've done this twice, but it's not a ROM switch, per se -- it's a PCB switch.
To take a Pioneer apart, see & read all at:
MoHPC – Repairs & Batteries – Pioneer Repairs
MoHPC – Articles Forum -- #199: Increasing HP-42s Memory to 32K
(No guarantees, of course . . . ) Be careful, good luck, and email or post any questions or concerns you have.
To take apart and rebuild a keyboard sandwich, see another message in this Forum.
Again, good luck!
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