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TI-84 Plus calculator support.

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Why does the screen show scattered lines?

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This is what it looks like when its on the normal screen, right after being switched on. What can I do to fix this?

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Try taking out all the batteries (including the backup battery), hold [On] for 10 seconds then put the batteries back in.

If that doesn't fix it them your screen ribbon cable is failing. This is a common issue but unfortunately impossible to fix without soldering skills. You can find more information about potentially fixing it here.

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