Question about Texas Instruments TI-89 Calculator

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I spilled soda on my TI-89 and it won't turn back on

I threw my soda in my bag, not knowing the top was loose, and got soda all over my TI-89 and TI-30 calculators, which I need for Calc II and Chem, respectively. Is there anything I can do to fix this or am I SOL? Also, is there a warranty, or any type of repair services? Thanks!

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When I asked for a full view of this page a message popped up the says', "Find the top calculator repairers in your area." Here's the site for the ones in my area, just input your area and you should be good.
I can't comment on warranty since your fault and no flaw with the calculator under normal use. Who knows it probably depends on the place you bought it so I'd check with them. They just may take it no questions asked. If the batteries weren't in it at the time would have been probably a little better situation now.
If you do decide to open it and clean and try to repair, good luck. Be careful at the area of the arrow keys and screen. Very small wires there. If you make it this far you should be able to clean it up and put it back together. Of course I take it you'll have all the batteries out, who knows when you put the batteries back in it, it may come back on.

Posted on Sep 18, 2009

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U can clean that all that soda content on u r calci by removing its cover...but as the soda will be reacting agent it will starts reacting and it will results in rusting of the circuit i prefer that u better change for a new one...or u can repair that by cleaning it...but cleanin process should be done by a experienced person...plz u dont try to clean that...u may get scratches in u r fingers...for al this things to do...i will tel u one thing that u better go for a new one!!!!

Posted on Jul 24, 2009


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Please don't get your hopes up, but perhaps something in the following few suggestions will work:

For the TI-89 Family, TI-92 Family, and Voyage™ 200:
  1. Adjust the contrast by pressing and releasing the Diamond Key key followed by pressing and releasing the [+] key; repeat as necessary. To adjust or lighten the display, use the [-] key.
  2. Users of the TI-89 Titanium or Voyage 200 should see the following case before performing the following reset procedure to prevent the loss of valuable Apps.
    On the TI-92 family or Voyage 200, hold the [2nd] key and the [hand] key, then press and release the [on] key. On the TI-89 family, press and hold the [2nd] key, left arrow, and right arrow; then press and release the [on] key. This should reinitialize the operating system, in which you should see a progress bar filling on the screen.
  3. Remove one of the AAA or AA batteries. Press and hold the [APPS] key, and while holding the [APPS] key, replace the battery and turn the unit on. TI-89, 92 Plus, or Voyage 200 users should see "Press I to install code...", and should press the [9] key. The calculator should then say, "Waiting to receive...". TI-89 Titanium users should see "Waiting to receive..." or "Waiting to received OS...". You will need to restore the calculator's operating system.
To reinstall the Calculator's operating system, take a look at the following TI site.

I would hunt around on the TI knowledge base to see if there are some more useful suggestions if nothing above works. If I find any more info that could be useful I will post it.

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The screws on the back are Torx bits size T6. You can pick up that type of screwdriver at Sears (I got a set of 12 micro screwdrivers marketed toward jewelers and hobbyists from there - lifetime guarantee) or maybe a local hardware store. Unfortunately, I'm not sure that once you're inside you can do a lot to revive your calculator. Some liquids can really take their toll on electronic circuitry, and you will probably need a volt meter and some more sophisticated tools to test whether your components are still good. Your best bet is probably to contact TI and see if they will repair it for cheap. Otherwise, I've seen (and bought) some TI-89s for $50 or $60 off eBay and Craigslist.

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