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Calculator is ok till I changed its batteries
Now my calculator cannot startup! Remember, always before changing batteries, back up any programs or solver equations!
One common problem is after installing new batteries, the calculator appears dead and will not power up. This can be sometimes be fixed by completely resetting the calculator and completely clearing memory.
Remove the battery cover and shake the batteries out. Now, using a small coin (or paper clip), slip the sides of the coin between the battery spring clips so that you touch both sides of the battery clips at the same time with the coin. This discharges the internal storage and will clear memory. Now, reinstall the batteries, observing the proper polarity picture shown on the case, slip on the battery cover and turn it on. You should see a "Memory Clear", "Pr Error" or similar message and you´re back to calculating.
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I have an old 15C (80s vintage). New batteries did not work. But, with one paperclip logged in the spring coil with the rounded end of the paperclip. Installed the new batteries again, and ´Eureka´ the HP fired right up and I am one happy user. HP products ´built to last´. Thanks for the Great tip!
Rick
9/11/2009 6:48:56 PM - US
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I came upon a new, in-the-box, HP-19B-II Business Consultant at a garage sale last month. The calculator was brand spanking new! The original batteries were still in the calculator, so I replaced them with new ones only to find that the unit did not power up. I had an inkling that it was a power problem but totally clueless as what to do to remedy the situation.
Enter Educalc.net.
After reading the short method of clearing the internal memory and resetting the calculator, I figured what the heck since I had nothing to lose. It took two paper clips (rounded at the ends so as not to get caught in the spring clips for each battery cavity). The paper clips were then joined for a few seconds, the new batteries were installed...and...(drun roll, please!)...tada! The unit fired up perfectly.
Whew, am I glad I took some extra time to visit this site. One never knows what treasures will befall them for just browsing around.
Thank you to whoever put up this very helpful tip.
Regards,
Ernie Z
Ernie
9/25/2007 2:38:52 PM - US
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I had not used my 17B II for over one year and the batteries had run out during that time. With new batteries it did not start up. I tried discharging with a coin and it still does not work.
Is there anything else I can try? Thanks.
J.
9/15/2007 9:34:06 AM - US
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