Question about Texas Instruments TI-84 Plus Calculator

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I put in the new battery, but the calculator still not function, should i change the back up battery too

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You can try to increase the contrast on the calculator to see if it's on or not. Press the (2nd) key and then the up arrow. Do this until you see the screen. Make sure you turn it on first. Let me know if this helps or not.

Posted on Aug 20, 2010

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All of the sudden it stopt working. Nothing happens when I push the ON button. I changed batteries. I took the backup battery out and put it back in (didn't put new one). Nothing helps. I changed the...


It is sold with an dapator that powers the calculator through the USB port. Use it and you will eliminate any doubt about the batteries. Try resetting the calculator.

Aug 26, 2011 | HP 50g Graphic Calculator

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My calculator will not turn on, so i tried putting new triple A batteries. My calculator still will not turn on. So i put in a new back up battery 1620, and it still wouldn't turn on. so i do not know...


TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

If this doesn't do it, please reply to this post and we can go on to the next step.

Jan 19, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

I have a TI-83 graphing calculator and it keeps reporting 'Low Battery'. We replaced the 4 AAA batteries with a fresh set and got the same message. The calculator is less than 2 yrs old. Do I need to...


There can be two causes to this problem. One, the batteries that you put in may be expired. Some batteries have expiration dates on them (i.e. Duracell). If the year on it has expired or is coming near to expiring, you may have to put newer batteries in there that are longer lasting in years. Even if the expiration year is far-off, you still may need to put newer batteries in the bay. Two, your hypothesis of changing the lithium battery are correct. I read in the manual that you should change it every 3 or 4 years. The lithium battery is the back-up battery and it is like a memory card for you calculator. Whenever you put a new fresh set of batteries in the bay, the lithium battery saves your information while you are inserting the batteries in the bay. When you turn on the calculator again, it saves your functions that you've had in there. Hope this clears up your confusion! Reply back if you are still seeing the message.

Jan 15, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

When I press ON, my calculator screen displays a couple random numbers and letters scattered across the screen, including a solid vertical line in the upper right corner. As soon as I push any key, the...


There are three possible solutions here. From what you are describing to me, you say the screen displays a couple of random numbers and letters, including a solid vertical line in the upper right corner, are scattered across the screen? Sounds like you are still in graphing mode. There is nothing wrong with your batteries and changing them won't help because I already know that you didn't change the CR Lithium Battery. This is the "memory card" for the TI-83 Plus. If you don't change that, when you insert new AAA batteries in the calculator, the memory has not been deleted. You probably don't remember, but the calculator remembers the last problem that you did, which was a graphing calculation. Try pressing the "Graph" button and the calculator will go back to function mode. If this doesn't work, try resetting all the memory.
  1. Remove a battery from the battery bay.
  2. Press and hold the CLEAR button while re-installing the battery.
  3. While still pressing the CLEAR key, press and hold down the ON button. If the home screen displays, release the keys.
  4. If the home screen is displayed, press 2nd MEMto display the memory menu.
  5. Select 7:Reset to display the "RAM ARCHIVE ALL" menu.
  6. Press the right arrow twice to display the "ALL" menu.
  7. Select 1:All Memory to display the "RESET MEMORY" menu.
  8. To proceed with the reset, select 2:Reset. The message "MEM cleared" is displayed on the home screen.
If this doesn't work, try changing the CR Lithium Battery. It is located in the battery bay at the top with the cross-head screw in it (It says BACK-UP BATTERY). It tells you what type of battery it takes and how to insert them in. I hope these possible solutions help. If all of them don't, then the only other thing I can think of is that it has some internal part alignment issues or a cold soldering iron blob, on the inside of the calculator. I saw one time on the Internet that cold soldering irons can sometimes make electronics not work properly.

Jan 14, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

I put new batteries in and it won't power up. Does the back-up battery effect this?


The backup battery is intended to retain the contents of memory while you change the main batteries. It's possible to run the calculator without one.

TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

If this doesn't do it, please append a comment to this post and we'll go on from there.

Sep 06, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Can I do numbers squared on this calculator, and how would I enter this?


The TI-30XA is a scientific calculator with many functions. You can calculate problems with fractions and decimals, as well as solve problems of probability and functions. A scientific calculator computes the number sentence you type in using the order of operations: parentheses first, then roots and exponents, then division and multiplication and, finally, addition and subtraction.
How to Use a TI-30XA
  • Step 1Press the [ON/C] key to turn on the calculator. Press the [OFF] key to turn it off. To use the calculator in solar mode, put the solar panel in the light and then press the [ON/C] key. To turn it off when in solar mode, slide the calculator cover back on and it will automatically shut off.
  • Step 2Replace the batteries by first removing the cover and placing it face down. Use a Phillips-head screwdriver to unscrew the back panel. Remove the back panel and change the batteries. Screw the back panel back on. Press [OFF] [ON/C] and [ON/C].
  • Aug 08, 2010 | Texas Instruments TI-30XA Calculator

    1 Answer

    I need to change the battery on the tI30-xa calculator. I need to know the size and how to change it.


    Remove slide cover. Place calculator face down. Using a small Phillips screwdriver, remove screws from back case. Remove back case. Remove discharged batteries. Caution: Avoid contact with other calculator
    components while changing batteries. Install new batteries positive side up, as shown on diagram inside case. Replace back case, and then replace screws.

    May 19, 2010 | Texas Instruments TI-30XA Calculator

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    TI-84 Plus: Calculator Unresponsive


    Try pressing the "On" button a couple times. That should work

    Oct 27, 2007 | Texas Instruments TI-84 Plus Calculator

    1 Answer

    Will not work


    yes, you must switch the backup

    Sep 17, 2007 | Texas Instruments TI-83 Plus Silver...

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