The Museum of HP Calculators

HP Forum Archive 05

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HP9810A defect
Message #1 Posted by Achim Buerger on 15 Apr 2001, 1:47 p.m.

I have a HP9810A which is obviously defect: when switched on the display shows some nonsense symbols and some of the keyboard-LEDs are illuminated. The calculator doesn't respond to any keystrokes. Does anyone know this problem? The only abnormality I could find is that the 20V testpoint in the power supply gives only about 16V. Could somebody check this in a working 9810?

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