Question about Texas Instruments TI-86 Calculator

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My TI-86 Screen is black with white lines running horizontally across it like stripes. Is there a way to fix this?

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How do I adjust the brightness of the screen?

Posted on Sep 20, 2012

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: ti-85: Horizontal Line Across Screen - Battery Problem?

Yes, the back up battery must be replaced.

Posted on Aug 27, 2007

Cameron Scott

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SOURCE: texas instruments ti-86 screen problem

Remove and replace the batteries should be first step. Also, I believe these have a smaller button-cell backup battery as well. Replace and reset to factory settings (backup any saved info if you can link with another TI calculator).

Posted on Mar 28, 2008

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Blank lines across the screen of a TI-86 graphing calculator


Try this, hook up new battery and go to MODE and darken and lighten the screen.. do it ten to fifteen times. if that doesn't help, try hook up most left and most right's battery terminal to a DC supply at 4.5V. dont go above 4.5 it will fry your calc (it is design to handle 3V). now you are forcing extra juice into the dead LCD screen lines... and reapeat the MODE + darken trick. I fixed mine like that! Works! and remeber to leave it completely black(darkest) for a while to keep that dead line alive!

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A line on an LCD, either horizontal or vertical usually means the video driver board is defective or the screen is defective, does it show up as black even on a dark screen? That means a line of LCD "shutter"s is not working and there is a problem that cant be fixed by a reboot or channel change. Bummer.

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I had the same prob with vertical lines on the screen, and getting messed up when there was lots of numbers on the screen.

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