20 Mar
2008
20 Mar
'08
5:29 p.m.
First is an HP9810A. I just powered it up...Several
LEDs turn on
immediately, but the display is blank and the keys are unresponsive.
Does anyone (Tony?) have any troubleshooting hints? Are schematics
for this machine floating around anywhere?
Tony Duell (a frequent contributor to this list), has reverse-engineered
schematics of the 9810A.
Hopefully he'll see this thread, and respond as to how to lay hands
them.
Rick Bensene
The Old Calculator Museum
http://oldcalculatormuseum.com