Question about Texas Instruments TI-15 Explorer Calculator

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Calculator won't turn off with new battery installed.

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!!

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  • Texas Instru... Master
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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.

Posted on Sep 07, 2009

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Posted on Jan 02, 2017

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

Posted on May 27, 2008

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SOURCE: Texas Instruments TI-504511 Calculator

Here you go!

http://education.ti.com/educationportal/downloadcenter/SoftwareDetail.do?website=US&tabId=2&appId=6150

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SOURCE: Texas Instruments TI-30X IIS Calculator '+/-' sign

it is just a (-) symbol and it is beside the decimal point (.) button

Posted on Mar 05, 2009

raklein62
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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.

Posted on Sep 05, 2009

  • 7993 Answers

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

Posted on Sep 17, 2009

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Before you send your calculator off to get it fix, please try this Ti 84 plus reset. If after preforming this reset and, installing the OS, and the problem with the pixels is still present then look for a replacement.

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.

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My calculator only works when it wants to. when i turn it on and press any button a 4 shows up on the screen. if i take the batteries out for a while and then put them in for a day and then try to use the...


The last question first. To verify if Texas instruments will send you a new calculator in exchange for the old you have to contact them.
TI Contact Information
TI-Cares Customer Support Contact a TI-Cares Customer Support representative via e-mail or phone to order products, inquire about issues, or ask general questions about TI education technology.

1-800-TI-CARES (800-842-2737)
Monday - Thursday: 8 a.m. - 7 p.m. Central Time
Friday: 10 a.m. - 7 p.m. Central Time btn_download.gif Contact TI-Cares Support
TI-Cares Technical Support Our Technical Support Group is trained to answer your technical questions about TI calculators, software, and accessories.

972-917-8324 (This is not a toll-free number)
Monday - Thursday: 8 a.m. - 4:30 p.m. Central Time
Friday: 10 a.m. - 4:30 p.m. Central Time btn_download.gif Contact Technical Support
While you are waiting for the eventual arrival of your new calculator, we may try to diagnose the ailing of the old one.
  1. Remove the old batteries. Buy a new set of batteries.
  2. Prepare the connectivity cables needed to connect the calculator to the computer. Choices are the TI USB silver cable, or the TI Graphlink Black serial cable.
  3. From education.ti.com, download the connectivity software compatible with the cable you will be using from this site. In all probability you will need the TI Connect 1.6 for Windows or Mac.
  4. From education.ti.com, download the latest operating system
  5. Install the Ti connectivity software on your computer.
  6. Wait for a day then insert the new batteries.
  7. Turn calculator ON
  8. Execute the TI Connect software.
  9. Connect calculator to computer.
  10. If you have an active Internet connection, click the Updates button on TIConnect main window.
  11. The software will download the latest OS and install it on the calculator.
  12. If you do not have an active Internet connection, run the TIConnect software.
  13. Connect calculator and computer. Turn calculator ON
  14. Drag and drop the OS which you downloaded on the TIConnect main window.
  15. The software will attempt to install the OS,
If for some reason this does not work, you can transfer the OS of a working calculator. You will need a cal-to-calc USB miniA to miniB cable or a calc-to-cal I/O cable.

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Either battery is dying, or circuit board has gone, or connector cable loose.

You can replace battery by removing 6 screws at back of calculator, but cost of battery is around 40% of buying new TI-30XA for $10 from Amazon, Staples or elsewhere.

I've used TI-30XA's for years, batteries usually last 2-3 years, then I buy new calculator. The one time I tried to replace battery, fading display still problem, so circuit board had gone bad.

So you could try battery replace and may be OK, but also may be waste of time and $$

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I had mine for 15 years. Are the batteries in correct? Might be broke

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