Question about Texas Instruments TI-83 Plus Calculator

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Some times the Keys won't display

This started yesterday. First I thought it was battery, then I changed the battery. The problem continued. The numbers keys inparticular won't display most of the times.

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Buy a new calculator

Posted on Sep 12, 2008

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EL9300 not responding after a battery change. Only a down arrow is displayed on screen on top of screen


Just had this EXACT problem on a Sharp EL-9200C. I got the down arrow to go away and then the calculator functioned like normal. Here's how: I got a ball point pen and rapidly activated the reset button on the back, then rapidly pressing the CL key... probably about 45-50 times, but eventually it cleared all the memory out and the calc was able to boot up. This was after replacing the batteries multiple times and trying every key and every 2ndF key. I feel like the master of the universe now!

Mar 07, 2015 | Sharp El-9200c Scientific Graphing...

1 Answer

Hard reset ti89


First the soft reset, just in case you haven't tried it yet: With the calculator turned off, press and hold the right-arrow, left-arrow, and 2nd keys. Press and release the ON key. Release the other keys.
The hard reset: Remove one of the four AAA batteries. Press and hold the (-) and ) keys (the change-sign and close-parenthesis keys) as you reinstall the battery. Continue holding (-) and ) for five seconds before releasing.

Feb 28, 2012 | Texas Instruments TI-89 Calculator

1 Answer

My HP 48GX recently have ((.)) in the display. I thought that is the indicator of low battery. However, I replace battery new several times the same display still appears. Even after turn off...


Somehow an alarm got set. Execute the command ACK once and see whether the indicator goes away.

To enter the command, press and hold the ALPHA key, then press and release the A, C, and K keys in turn, then release ALPHA, and press ENTER. But you already knew that, didn't you?

Oct 25, 2011 | HP 48gx Calculator

1 Answer

My TI-84 has been used for one year already. I thought it was dead but when I inserted new batteries it started working again. I was lucky to have it work for just over a day and it died less than a day...


This could have been caused by damage from the previous owner but, most electronics have a certain life-span that no amout of batteries can help.
I too had a TI-84 silver edition, and one day it no longer worked. I don't believe there is any solution to this problem. My advice is to simply get another one new.

May 18, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

Locked


If the calculator has locked up you should perform a reset.
  1. Press and hold the [C] (ON/OFF) key
  2. Press and hold the [LN] key (third key from the left on the top row).
  3. Release both keys simultaneously. T
  4. The calculator should display "0.00" (if the number of decimal places is set to two.)
If that does not bring it to life you should perform a full memory reset

  1. Press and hold the [C] (ON/OFF) key.
  2. Press and hold the first key from the left ( the Square root x key) and the first key from the right (the SIGMA+ key ) on the top row.
  3. Release all three keys at the same time.
  4. Calculator should display "ALL CLr".
  5. To clear the message press the [C] (ON/OFF).
  6. The calculator should display "0.00."
If the calculator does not respond as expected,
  • Remove the batteries, and
  • with a metallic coin (and what coin is not metallica) short-circuit the calculator's electrical terminals.
  • Maintain the coin for about ten seconds.
  • Replace the batteries (preferably fresh ones) respecting the diagram inside battery compartment.
  • The Calculator should display "ALL CLr".
  • To clear the message press the [C] (ON/OFF).
  • The calculator should display "0.00."
If the calculator does not respond to the foregoing procedures, remove the batteries and leave them out of the calculator for 24 to 48 hours to drain capacitors.

If it continues to malfunction, it will need to be repaired. One repair shop in Pennsylvania, USA has a website at http://www.fixthatcalc.com. You should contact them.

Apr 11, 2010 | HP 20s Calculator

1 Answer

Hp20s has locked up


Hi,
If the calculator has locked up you should perform a reset.
  1. Press and hold the [C] (ON/OFF) key
  2. Press and hold the [LN] key (third key from the left on the top row).
  3. Release both keys simultaneously. T
  4. The calculator should display "0.00" (if the number of decimal places is set to two.)
If that does not bring it to life you should perform a full memory reset

  1. Press and hold the [C] (ON/OFF) key.
  2. Press and hold the first key from the left ( the Square root x key) and the first key from the right (the SIGMA+ key ) on the top row.
  3. Release all three keys at the same time.
  4. Calculator should display "ALL CLr".
  5. To clear the message press the [C] (ON/OFF).
  6. The calculator should display "0.00."
If the calculator does not respond as expected,
  • Remove the batteries, and
  • with a metallic coin (and what coin is not metallica) short-circuit the calculator's electrical terminals.
  • Maintain the coin for about ten seconds.
  • Replace the batteries (preferably fresh ones) respecting the diagram inside battery compartment.
  • The Calculator should display "ALL CLr".
  • To clear the message press the [C] (ON/OFF).
  • The calculator should display "0.00."
If the calculator does not respond to the foregoing procedures, remove the batteries and leave them out of the calculator for 24 to 48 hours to drain capacitors.

If it continues to malfunction, it will need to be repaired. One repair shop in Pennsylvania, USA has a website at http://www.fixthatcalc.com. You should contact them.


Hope it helps.
Thank you for rating the solution.


Nov 05, 2009 | HP 20s Calculator

1 Answer

HP 20S Calculator


Hi,
If the calculator has locked up you should perform a reset.
  1. Press and hold the [C] (ON/OFF) key
  2. Press and hold the [LN] key (third key from the left on the top row).
  3. Release both keys simultaneously. T
  4. The calculator should display "0.00" (if the number of decimal places is set to two.)
If that does not bring it to life you should perform a full memory reset

  1. Press and hold the [C] (ON/OFF) key.
  2. Press and hold the first key from the left ( the Square root x key) and the first key from the right (the SIGMA+ key ) on the top row.
  3. Release all three keys at the same time.
  4. Calculator should display "ALL CLr".
  5. To clear the message press the [C] (ON/OFF).
  6. The calculator should display "0.00."
If the calculator does not respond as expected,
  • Remove the batteries, and
  • with a metallic coin (and what coin is not metallica) short-circuit the calculator's electrical terminals.
  • Maintain the coin for about ten seconds.
  • Replace the batteries (preferably fresh ones) respecting the diagram inside battery compartment.
  • The Calculator should display "ALL CLr".
  • To clear the message press the [C] (ON/OFF).
  • The calculator should display "0.00."
If the calculator does not respond to the foregoing procedures, remove the batteries and leave them out of the calculator for 24 to 48 hours to drain capacitors.

If it continues to malfunction, it will need to be repaired. One repair shop in Pennsylvania, USA has a website at http://www.fixthatcalc.com Here is the link . You should contact them.


Hope it helps.
Thank you for rating the solution.

Sep 03, 2008 | HP 20s Calculator

1 Answer

Display is so light that I can barely read it, I've replaced the batteries and no change


Have you attempted darkening the display on the calculator through the function keys? Push "2nd" and then push "up" a few times. After resetting the calculator, this setting will always revert to a lower, unreadable setting. I'm sure TI knows about this, but they probably arent too inclined to fix it.

Jun 04, 2007 | Texas Instruments TI-83 Plus Calculator

6 Answers

Canon P170-DH


I played around with mine and found the keys that you change the time and date with by looking over the top of the keyboard. On my model there is a time and date key that has a little calendar and clock actually on the key. That key allows you to switch between date and calendar. After you click on that button you will either see a date or time. To change those numbers use the following keys: The equal (=) key will change date and time by holding the key down till the numbers on the display start to flash. Once they start to flash use the number keys to make your changes. The multiplication (X) key you can use to change am and pm. If you want military time use the division key. If you are changing the date there is an additional key that lets you change the format. What this means is the sequence on the display by the way you view the month, date and year. You can change it so year shows first then month and date or interchange day and month. Once I found those keys it was easy.

Jan 28, 2007 | Canon P170-DH Calculator

3 Answers

Calculator will not come on


I have the same problem with the calc not responding to removing one batt and reinstalling while holding clear, etc. My fix is to hook up wires to the battery leads and plug the wire into a 120 volt outlet. Watch it light up, but do NOT breath the smoke as it is extremely toxic. ;-) lkw

Aug 25, 2006 | Texas Instruments TI-83 Plus Calculator

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