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!!
Hello,
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.
SOURCE: cant get M2 off of my TI-30XA calculator
Press 0 STO 2 to clear your memory 2 (M2). to clear M1 and M3 press 0 STO 1 or 0 STO 3
SOURCE: Texas Instruments TI-30X IIS Calculator '+/-' sign
it is just a (-) symbol and it is beside the decimal point (.) button
SOURCE: texas instruments TI 38 PLUS USAGE
You can download all the manuals at this sites' troubleshooting section too. Plus you can get other great instructions and tips heree too.
SOURCE: Inputing scientific notation into my calculator
Hello,
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
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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