HP Calculator Heritage HP 15 - 1982

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Make certain to try n ew batteries.
1)With the calculator off, press and hold the "ON" key down. Now press and hold the minus (-) key. Relaease the "ON" key and PR ERROR will be displayed. Now release the minus (-) key and press any key on the deyboard and your unit should now be reset.
2)Or remove the batteries to expose the terminals located on each end of the battery compartment. With a paper clip or piece of wire, briefly connect the terminals. Only momentary contact is required!! Re-insert batteries and press the "ON" key. This will cause a Memory Lost condition, and you may press the "ON" key more than once to restore proper operation.

In reply to GEorge White:
ok, I have my HP 15 C that I have used for years. Last week the batteries gave out. I replaced them but ever sinc I have a little asterik blinking in the bottom left hand side of the display. Does anyone have any idea what this is caused by and how to reset it?

George White
4/26/2007 6:57:04 PM - US  | reply

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with cacl off try pressing the on and the - key at same time sets calc into power error clear and then reset decimal to your preference my 15 just died today lcd cracked and saw prices on ebay crap had since ´82 prefered even over my 48
Anonymous
4/23/2007 12:44:17 PM - US  | reply

ok,
I have my HP 15 C that I have used for years. Last week the batteries gave out. I replaced them but ever sinc I have a little asterik blinking in the bottom left hand side of the display. Does anyone have any idea what this is caused by and how to reset it?
GEorge White
4/19/2006 9:23:19 PM - US  | reply