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The TI-Nspire CX handheld features a full-color, backlit screen, thin sleek design and includes TI-Nspire rechargeable battery.

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TI-Nspire CX Cas Damaged Charger Port

This question is specifically for the CX CAS model of the TI-Nspire calculators.

The calculator is fully functioning except for the fact that it won't charge, unless the cord and charging port are aligned a certain way. It is not a problem with the cord, but with the charging port.

It seems that its contact points to the motherboard have been disconnected, as it has come loose and moves independently of the chassis, and only with luck can it be placed a certain way so that the calculator may charge. I would have to open it up and solder the contact points back to the motherboard, but I don't have the tools nor the know-how to do it.

I tried looking for ways to just charge the battery itself, since it can be easily removed with a Phillips screw driver, but haven't found the parts that would fit just yet. Any way to be able to charge it up would be appreciated.

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I have a question, do you know if the little led beside the charger port isn't supposed to glow because of the newest update (it used to when i was at version 3.(...) but then it stopped when i updated to version

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Mine would start up halfway when plugged in but crash and startup again half way… No warning about the battery, butt taking it out solved the problem.

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if you are able to wire a charger (cut the end that is pluged into it ) to the battery and it should charge it. If this doesn't work then you can get a samsung video camera charger

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I have similar problem. One pin inside USB connector (for DATA) was bended and rammed backward.

So charging on my calc is working, but connection to PC is not working.

It is some stupid USB connector. Because I used only original TI cable and I made connection to PC only few times.


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This calculator is required for a lot of kids in our school district and it’s still a common probem without a simple answer. Schools, testing agencies (that allow the Nspire to be used during SATs and ACTs) and TI collaborating to insure a stream of money to TI…

Anyway, options:

  1. There is a cheap device on ebay that purports to charge NSpire batteries once removed from the calculator. Search for “Mains Battery Charger for Texas Instruments Select TI-Nspire” current one is from China, $9 shipped, allow 4-6 weeks for delivery. I have not tried this yet.
  2. The port on the calculator is actually just a custom shaped USB Mini. I have been able to charge my TI-Nspire by using a standard USB charger that ends with a USB Mini male (being sure to match the output amperage and voltage, obviously). What this means is that a USB Mini female port could be retro-fitted into an Nspire, and any technician who can replace surface-mount devices could do the repair WITHOUT having access to TI’s custom jack or any other custom hardware. I have not tried this yet either.
  3. The third option is to get one of the TI-Nspire 10-device multi-chargers. These use the calculator’s data port to charge, not the actual charger port. I have not done this yet as these chargers are as expensive as the calculators themselves. Search for “ti-nspire cx cas docking station” So far the cheapest I’ve found is $80, which gets close to justifying buying a new/used calculator that doesn’t have any issues…

That nobody has found a way to make a single charger that simply uses that data port is supremely frustrating. But the industry isn’t motivated to help consumers when schools and standardized testing agencies are supporting their monopoly.

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