My Calculator will not turn on. I changed both the small battery and the triple A batteries. What is wrong with it and how can I fix it?
Office Equipment & Supplies - Texas Instruments - TI-89 Calculator
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Answers & Comments
TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and hold the diamond key, then press + key repeatedly until the screen darkens.
If this doesn't do it, please reply to this post and we can go on to the next step.
Well, it is not the steps that come from Texas Instruments. I just called them. And wouldn't you be saving more time doing a hard RAM reset? But, even that is not the correct procedure coming from Texas Instruments.
Remove one of the AAA batteries. Press and hold the ) and (-) keys as you reinstall the battery. Continue holding the ) and (-) keys for five seconds before releasing. Anything now?