Recent content by jakej

  1. J

    Calculators What Could Be Causing My TI-89 to Lock Up Repeatedly?

    Thanks! I'll look into it when I feel the need to upgrade.
  2. J

    Calculators What Could Be Causing My TI-89 to Lock Up Repeatedly?

    My TI-84 Plus works fine for my current needs, so I'll probably stick with it for now.
  3. J

    Calculators What Could Be Causing My TI-89 to Lock Up Repeatedly?

    I never ended up trying this until just now. Alas, no dice. Downloaded the OS without issue with fresh batteries (each at 1.6 volts). It installed, rebooted, and worked fine at first. Then I powered it off, then back on and it was frozen again. Seems like it's got to be hardware. Oh well...
  4. J

    Calculators What Could Be Causing My TI-89 to Lock Up Repeatedly?

    Wow. Thanks. I didn't realize that. If I can get it to stay awake long enough I'll hopefully give it a try this weekend.
  5. J

    Calculators What Could Be Causing My TI-89 to Lock Up Repeatedly?

    Thanks, @CalcNerd. Interesting, too. I just checked the batteries I had been using (Duracell Duralock alkaline) with a calibrated Fluke DMM and they were each at around 1.45 volts. I got a new set and they were around 1.61. Given that TI's site (...
  6. J

    Calculators What Could Be Causing My TI-89 to Lock Up Repeatedly?

    So, I foolishly bought a TI-89 Titanium on Ebay that was known to be in a locked up state. I've fixed locked up things before and figured I could here, too. Bad move. A thread here indicated that the hot car trick might fix it. I thought it had, but basically I think that was just due to...
  7. J

    What are some tips for troubleshooting a frozen TI-89 calculator?

    I should add: the USB port did not work at all when it was in that frozen condition. Even if I used the "insert battery while holding down APPS" shortcut to get to the "Waiting to receive." Nothing would happen when I inserted the USB port. After doing the reflow with my hot car (haha), it...
  8. J

    What are some tips for troubleshooting a frozen TI-89 calculator?

    I actually registered primarily to thank another user (lordloss). My TI-89 Titanium wasn't responding to anything. Putting in batteries turned it on, but then it'd be locked up. I tried all the tips and tricks (key combinations, etc.), but it wasn't recognized by Windows to send new firmware and...
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