SONY TV WILL NOT STAY ON.STAYS ON FOR A FEW SECONDS THEN TURNS OFF BY ITSELF.HAS LINES ACROSS SCREEN.
Sounds like a vertical problem, usually you'll see one white line across the screen, but one I worked on would come on and the bottom half of the picture was gone and there were lines across the top of the screen.
If you know how to solder & can find the vertical output chip then you could try resoldering the pins. If this doesn't fix it then it needs new parts.
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