Hello, I suspect that the screen contrast is too light to enable you to see what is displayed.
Adjust
the contrast by pressing and releasing the Diamond key followed by
pressing and releasing the [+] key; repeat as necessary.
If that does not solve the problem, you may want to read this artticle from the TI FAQ and Knowledge Base. Scroll down to the part on the TI89 calculator.
If I try to make any graph besides a scatter plot, it locks up and it I haven't been able to get it...
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If I try to make any graph besides a scatter plot, it locks up and it I haven't been able to get it to restart or anything. I take the batteries out then put them back in but it doesn't reset it.
Half of the screen is black and half is well-lit. Editing the contrast results in one side of the...
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Half of the screen is black and half is well-lit. Editing the contrast results in one side of the screen completely blank and the other back to normal. How can I fix this?
when i installed the initial batteries, the calculator still had a blank screen. i adjusted the...
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