Question about Texas Instruments TI-84 Plus Calculator

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TI-84 Plus with water damage

Over the weekend I had part of the ceiling collapse in my classroom, soaking three of my TI - 84s. They currently are not working. I'm having a hard time taking them apart to try to dry them out - any suggestions?


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I had the same problem but its best to first just dry it out and with a hair drier at low. Forget about openning it up i couldn't get mine open either. Let it sit for a day and then take the batteries out and press the on button for 30 sec. then take new batteries and put them in and it should work.

Posted on Sep 13, 2008

  • snacks tasty Sep 13, 2008

    Or theres a short in the calculator I/O port. Try blowing really hard in there and that might help other than that i don't know.


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My ti-84 plus got wet and now wont turn on

the only thing that I can recommend it to stick it in a zip-lock bag full of dry rice for 24hrs. Sometimes there is moisture that you just can't see & rice has a way of attracting liquids from electronic components. Hence, potentially saving your electronic device. If this does work -- if I were you I would suggest always storing your calculator, ritually, in a zip-lock bag so this does not occur again (I do this -- TI-84s are not cheap accessories -- better safe then sorry). Good luck!

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I'm sorry to tell you that your daughter is out of luck :(
In the ti calculators, most data is stored in ram. this includes programs, variables, etc. the RAM is kept in its current state by battery power. But, when that battery power is lost the ram reverts to its normal state, erasing all data stored in it.
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That actually is a result of water damage. You probably need to replace it, or see about getting it taken apart and dried if the water damage was recent. DO NOT take it apart yourself. Go somewhere and ask if that is possible.

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TI 84 soaked

Unless it is a warranty repair, I don't think you will find an economical repair for it.
What you might try is to open the case so at least one side is exposed, use blood-temperature distilled water with a drop of dish detergent to bathe the calculator, then follow with the same temp of distilled water without the detergent to rinse it.
Then use some warm source (not hot) to allow the unit to dry for several days before even trying it.
No guarantees but this won't make it worse and may remove some deposits left by your bottled water which often has added minerals that might interfere with the nanoamperes that flow in that circuit. 

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