HP Forum Archive 12

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Non-working HP-65 Message #1 Posted by Jürgen (CH) on 10 Apr 2003, 7:25 p.m. I've got a nice HP-65, but unfortunately, it does not work. Sometimes when I turn it on, I can see flickering dots. But most of the time, nothing happens. The battery is OK, I've tested it in an HP-67. I've opened the calc, everything looks fine. I've disconnected the card reader motor and connected it to the batteries; the motor works. I guess some of the electronic parts on the PCB are dead. Any idea on how to find the faulty component? Any advise highly appreciated! Thanks, Jürgen

Re: Non-working HP-65 Message #2 Posted by David Ramsey on 11 Apr 2003, 2:03 a.m., in response to message #1 by Jürgen (CH) Have you tried cleaning the power switch contacts and the metal piece inside the power switch?

Re: Non-working HP-65 Message #3 Posted by Jürgen (CH) on 11 Apr 2003, 4:01 a.m., in response to message #2 by David Ramsey Yes, I've tried that. Does not seem to be the problem.

Re: Non-working HP-65 Message #4 Posted by David Smith on 11 Apr 2003, 6:00 p.m., in response to message #1 by Jürgen (CH) Have you tried the machine on the charger? Also clean the battery contacts. The battery touches the SIDES of the contact springs near the top of them.

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