Question about Samsung Galaxy Tab Tablet PC

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Grey screen with coloured lines

Light grey screen with lines across and bands coming down

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Sounds like your video processor is faulty or a loose ribbon cable inside your tablet.

Posted on May 03, 2014

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Posted on Jan 02, 2017

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3. across the top of the screen you'll see a magnifying glass (top left), a microphone, a folder with three dots on it (center) and dark area on the top right corner with six blue squares in it. Press the squares. Now you'll see your apps.
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http://www.youtube.com/watch?v=e_rK6WRT3Ps
Skip ahead to 2:38. That's where he turns it on and then he changes the language (he could be changing it to Spanish, but you'll get the idea).
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