Question about Texas Instruments TI-86 Calculator

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Won't power on even though i've installed new batteries. There is no corrosion on the battery terminals.

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Hi,
Check that the terminals in the battery compartment are clean and shiny. Remove any powder left after battery leakage. Insert fresh batteries in calculator. Make sure you respect the polarity diagram. +-+- (Many malfunctions come from incorrectly placed batteries).

After replacing batteries, calculator is restored to defaults and screen display may be too loght or too dark

To adjust the screen: Darken or lighten display

To darken screen
Press [2nd] key and release it.
Press and hold [UpArrow] until screen is dark enough.

To lighten screen
Press [2nd] key and release it.
Press and hold [DownArrow] until screen is light enough.

Hope it helps.

Posted on Dec 05, 2009

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