Question about Texas Instruments TI-15 Explorer Calculator
I have about 10 Texas Instruments TI-15 that quit working over time. So I figured the battery went dead in them. Well I replaced the battery in some of them and now when I turn them on, they won't turn off. I have tried clearing the memory and everything. All of the other functions seem to work on them but just can't turn them off?? My wife uses these for teaching so any assistance would be appreciated!!
If they are solar powered and if the power down button is not functionning I would not worry about them. Usually battery powered calculators have an automatic power down feature, and sometimes solar powered machines as well. The only free thing we get is the sun's energy. Maybe not the only one (oxygen).
Hope it helps.
Posted on Sep 07, 2009
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Posted on Jan 02, 2017
You can download all the manuals at this sites' troubleshooting section too. Plus you can get other great instructions and tips heree too.
Posted on Sep 05, 2009
1. To convert a number to scientific equation, use [2nd][Sci]
Exemples 12345 [=] screen shows 12345 Then [2nd][Sci] coverts it to 1.2345 ^04 to the power 4.
2. To enter directly a number in scientific notation (e.g. -1.2345 X10^(-65) a very small number) you use the [EE] key 1.2345[+ /-][EE][+/-]65 shows as -1.2345 -65
1.6X10^(-19) 1.6[EE][+/-]19 shows as 1.6 -19
Hope it helps
Posted on Sep 17, 2009
Tips for a great answer:
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The resets described in these troubleshooting steps will cause a loss of applications, programs and data. If at all possible please create a backup using TI Connect™ first.
Remove all of the batteries including the round lithium battery for 5 minutes. After the 5 minute period, reinsert all of the batteries and turn the calculator on. Adjust the contrast if necessary. If this reset does not work to clear the problem then read further.
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