HELP! i think my Ti89 is stuck....no reset buttons?

[otispunkmeyer]

i think its crashed or something or got stuck doing a really long 2nd order differential equation that i just made up to try out....now its stuck, and even if i take the batteries out...when i put them back in it continues with the calculation, which im not even sure if its doing

how do i reset this bastage!

 

[DivideBYZero]

Throw it down the stairs.

 

[dug777]

leave the batts out for a good 10 mins...

 

[otispunkmeyer]

what about that back up battery

should i take that out?>

 

[Cheezeit]

Originally posted by: otispunkmeyer
what about that back up battery

should i take that out?>

yes, try that.

I hope you dont have too much stuff stored on that

 

[ZOOYUKA]

Originally posted by: otispunkmeyer
what about that back up battery

should i take that out?>

Yep... that should do it.

 

[EyeMWing]

the ON button interrupts the present command.

 

[Fraggable]

Oh yeah get the backup battery out. The memory in those things is volatile except for the chip that holds the firmware, so if you power it all the way off it will reset to factory settings. It physically couldn't remember that equation. That sucks if you had other programs and stuff on there though.

 

[otispunkmeyer]

well did it....its stopped number crunching, and thankfully all the apps i had on there are still there....though i dont think the EE20o or what ever it is is still working properly but thats for electrical engineers anyway, ill put it back on if i need it. other than that its all still there and working

MEpro, EEpro, polynomial root finder, symbolic math guide, simultaneous eq soler, cabri geometry and calculus tools

 

[JoeKing]

lol next time this happens I believe there's a reset "panic" button hidden under the lower right plastic foot that you can press with a small sharp object.

 

[otispunkmeyer]

Originally posted by: JoeKing
lol next time this happens I believe there's a reset "panic" button hidden under the lower right plastic foot that you can press with a small sharp object.

not sure about that, i have the Ti89 Titanium and its got a big block of rubber across the bottom for a foot

 

[qaa541]

Hit the ON button FIRST. That should break the current operation. If it doesn't, pull the batteries for a few mins. If that doesnt work, pull the lithium battery and let it sit for awhile (also try hitting the on button at this time).

 

[mercanucaribe]

Damn kids these days, using calculators!

 

[TheHand]

Eleven years in the progress, I have stumbled upon a solution after looking at this blog, so I created an account just to answer this for future people.

"The TI-89 family, TI-92 family or Voyage 200 graphing calculators may display "busy" for a certain time while processing complex computations or solving equations. However, if the calculator displays busy for more than 10 minutes please see the below instructions:

NOTE: The following procedures will completely reset the calculator. Please, bear in mind that this will erase the contents of the calculator's memory and restore all manufacturer's defaults.

• Press and hold down the [2ND] key and the left and right arrow keys all at the same time.

• Press [ON].

• Release all the keys at the same time.

• Adjust the contrast, if necessary.

This should reinitialize the operating system, after which the calculator should then be functional again.

If the calculator is still not responding refer to this Troubleshooting case for additional information."

Straight from TI: https://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=80031