Question about Texas Instruments TI-92 Plus Calculator

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Cpu is not working

Cpu not working power is coming to motherboard

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Hi my TI-92 that I bought at a garage sale will not power up after installing 4 AA and coin ( Brand New )batteries. How can I fix this problem. Thanks Ed

Posted on Jun 28, 2008

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Posted on Jan 02, 2017

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Ti 83 will not power on replaced all batteries


When you clear memory, the contrast sometimes changes. If the screen
is faded or blank, adjust the contrast by pressing 2nd and up- arrow or down- arrow keys .

Resetting RAM restores RAM system variables to factory settings and
deletes all nonsystem variables and all programs. Resetting defaults
restores all system variables to default settings without deleting variables and programs in RAM. Resetting RAM or resetting defaults does not
affect variables and applications in user data archive.
Tip: Before you reset all RAM memory, consider restoring sufficient available
memory by deleting only selected data.
To reset all RAM memory or RAM defaults on the TI-83 Plus, follow these
steps.
1. From the RAM ARCHIVE ALL menu, select 1:ALL RAM to display the
RESET RAM menu or 2:Defaults to display the RESET DEFAULTS menu.
2. If you are resetting RAM, read the message below the RESET RAM
menu.
• To cancel the reset and return to the home screen, press .
• To erase RAM memory or reset defaults, select 2:Reset.
Depending on your choice, the message RAM cleared or Defaults
set is displayed on the home screen.

Mar 25, 2012 | Texas Instruments TI-83 Plus Calculator

1 Answer

TI-83 no power


I'd say not, you've done your due dilligence. From there I'd say it is a problem in the CPU. Good Luck

Dec 28, 2007 | Texas Instruments TI-83 Plus Calculator

1 Answer

My calculator was left outside in the rain and doesn't turn on. I'm not exactly sure what's wrong with it specifically. It just doesn't operate.


The CPU of your calculator most likely got wet and rusted up the parts. If not, the screen may have gotten water damage. Either way, it will no longer work and you will have to buy a new one.

Aug 12, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

Coffee was spilled on the calculator. How can it be fixed?


I am not sure if you will depends on how much water coffee reached the motherboard inside. Sometimes you can open them up with a screwdriver and let it air out for 24hrs and then try. If after 24hrs it doesn't come back on you might have to get another one. It truely depends on if anything shortened out.

Jun 30, 2010 | Sharp EL-386R Calculator

1 Answer

Was using the computer and it just shut off and will not come back on. Other things plugged into the power strip is still working ,so not the power strip


Check the fuse in the plug (if it has one).

Check any fuse around the power supply.

If replacing any blown fuse results in immediate blowing of the replacement, take the computer to a repair man.

Dec 19, 2009 | Office Equipment & Supplies

1 Answer

My Casio fx-300ES won't power on.


2 causes for this kind of problem:

1. lose battery contacts
2. poor connection on its components on the motherboard. (needs to resoldered)

Mar 11, 2008 | Casio fx-300ES Calculator

2 Answers

TI-84 plus DEAD


There is a chance there is a battery leakage and the contact is spoilt. That's what I'm facing now as well

Oct 08, 2007 | Texas Instruments TI-84 Plus Calculator

1 Answer

My ti-83 has a weird display problem. I updated os versiyon but still it has got weird display. what can I do?


There maybe electrical shorts connecting the two motherboards, logic part and screen display part, or within the screen display part, causing the weird display when the calculator appears otherwise functional. Open the TI 83+ case following the U Of Washington posting on fixing TI 83+ problem on inability to communicate with TI link cable between calculator and computer. I used the plastic tools in an IPod battery replacement set to open the TI 83+ case as plastic tools will cause less damage to the TI case. Under the aluminun foil are the two motherboards, each a work of beauty. Good work TI. Connecting the two motherboards is a adhesive enbedded connectors sheet. Above that adhesive connector sheet was a different adhesive connectors sheet in the screen display part, which in my case, some of connectors were exposed. I wiped that adhesive connector sheet and the weird display disappeared with calculator functioning. I may buy some heat resistant clear adhesive tape to put over the exposed connectors part for insulation if problem occurs again. The above may or may not be helpful.

Mar 18, 2007 | Texas Instruments TI-83 Plus Calculator

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