Help with HP-25 Message #1 Posted by Jamie Cox on 11 June 2004, 9:59 p.m.
I recently acquired a nice-looking HP-25. It was languishing in a pile of junk. It was in the original case. I didn't find a charger for it. The battery pack looked to be in good condition -- no corrosion. It must have been replaced. I removed the battery pack from the calculator and charged it with a NiCad battery charger. It holds a charge. The battery contacts are okay, too.
I put the charged pack into the calculator and powered it on.
The calculator didn't work. The display behaved erratically when turned on. It has never displayed correct digits, even for a moment.
Is there any hope for fixing an HP-25 with this type of problem? Any ideas? Thanks.
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