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I posted my question on the forum with a screen grab of my problem, maybe that was the wrong place. I have a Powerbook G4. Anyhow, My screen will have green/cyan lines flashing on it every couple of minutes during use. Sometimes the lines are red too. I can get the lines to disappear if I...

I have a Powerbook G4 and my screen has green and sometimes red lines pulsing through it. Sometimes they just sit still. Sometimes it disappears and looks normal. I think it has something to do with the pressure I put on the keyboard or the area just below the keyboard. I've attached a...