Question about Casio FX-300MS Calculator

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Calculator will not come on at all

Calculator has ttwo way power but willnot turn on at all. will replacing the battery do any good?

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  • Anonymous Jan 28, 2009

    perhaps...

    I also have the same problem and I have the calculator is 20 bits around me...

    LOL!

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  • Casio Master
  • 7,993 Answers

Hello,
Replacing the battery will always do good. You will be assured that the problem you may be having is not due to spent batteries, so that you may focus on other potential causes.
Hope it helps.

Posted on Sep 25, 2009

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Posted on Jan 02, 2017

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1 Answer

Does not power up after corroded batteries are replaced.


Sometimes these is corrosion on the contacts from the corroded batteries. Try cleaning it off with some sandpaper. Make sure to thoroughly wash your hands after or use gloves!

Good luck.

Sep 08, 2015 | Texas Instruments TI-83 Plus Calculator

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Will not turn on


did the old batteries leak check the battery terminals may sure they are clean and making good contact.test the new batteries sometimes even new batteries are defective

Mar 24, 2014 | Calculated Industries 4060 Construction...

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Wont turn on


Good morning, afternoon, evening or night; whatever time of day you are viewing this solution post. Thank you for choosing FixYa to assist you. You are having problems because you calculator won't turn on. I think you should try changing the batteries. Did you know that your calculator has two batteries powering it? Not only are the 4 AAA batteries powering it, but there is also a CR 3V Lithium Back Up battery powering it as well. First, try changing the 4 AAA batteries. If that still does not power your calculator properly, you will need to replace the lithium back up battery. You can find this at a department store or store that carries electronics. To do this, open your regular battery compartment. Above the AAA batteries is a compartment that says "BACK UP BATTERY CR1616 OR CR1620" with a picture of it. Use a small crosshead screwdriver to open the compartment. Take the old battery out and replace it with the new one. Rescrew the lithium battery compartment back on and close the AAA battery compartment. Turn on your calculator and see if that works. I hope this solution solves this.

Sep 27, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

Screen says ram cleared


When the calculator is turned ON, power to refresh the RAM is supplied by the main batteries. However, when it is OFF, the RAM relies on the backup battery to keep itself refreshed.
If you get the RAM CLEARED message whenever you turn calculator ON, it most certainly is due to a depleted backup battery. You will have to replace the backup battery.

To avoid losing anything important from RAM (what do I say, you are already losing the contents of the RAM), make sure that main batteries are still good, then replace the backup battery.

You can verify the state of the main batteries in a battery tester or by connecting the calculator to the computer with TI USB Silver cable and TI Connect software. If you run into problem such as calculator not recognized it is most probably due to weak batteries.

When you connect it to computer try updating the OS if OS version to 2.53 MP or a more recent one..

Aug 30, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

WILL NOT SHUT ON


Having received no response in over a month, I assume it was merely a matter of the screen contrast.

Jul 11, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

My calculator periodically will simply die. When


When the calculator is turned ON, power to refresh the RAM is supplied by the main batteries. However, when it is OFF, the RAM relies on the backup battery to keep itself refreshed.
If you get the RAM CLEARED message whenever you turn calculator ON, it most certainly is due to a depleted backup battery. You will have to replace the backup battery.

To avoid losing anything important from RAM (what do I say, you are already losing the contents of the RAM), make sure that main batteries are still good, then replace the backup battery.

You can verify the state of the main batteries in a battery tester or by connecting the calculator to the computer with TI USB Silver cable and TI Connect software. If you run into problem such as calculator not recognized it is most probably due to weak batteries.

When you connect it to computer try updating the OS if OS version is not 1.19.




Mar 02, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

TI-83 Plus ram cleared message when turned on


It calculator tells you Ram Cleared each time you turn it on, the most likely reason is that the backup battery is depleted. Its role is to keep the memory modules electrically refreshed when calculator is turned off. If the backup battery is dead, the memory is erased when you turn calculator OFF. Main batteries no longer supply power and the contents of the memory are cleared.
  1. Check that main batteries are good and inserted in calculator.
  2. Turn calculator OFF.
  3. Replace the backup battery.
  4. Turn calculator ON.
  5. Press the [CLEAR] key to erase the "Ram Cleared" message.

Jan 19, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

My texas instruments ti-30Xa doesn't turn on!


It is battery powered. You simply need to replace the battery. This website may help you.

http://www.calculatorsource.com/ti-30xa.html

Aug 03, 2009 | Texas Instruments TI-30XA Calculator

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Laptop willnot power up. I have checked the ac


Hi,
It could be the battery which is at fault, take the battery out and try to boot it on AC power only.
Please post back with the results.



Good luck.

Jul 29, 2009 | Gateway MX6920 Notebook

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The calculator casio CFX 9850GA was not turning on..


first:you must clean battery compatrment in direction of contact point with good contact cleaner from any electronic store near you or from radio shack.
second:clean power switch with contact cleaner.

Dec 21, 2007 | Casio CFX 9850GA Plus Calculator

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