no backlight on screen

I am having a problem with the brightness on my display .There is a image on the screen when the laptop i completely open .When I close the laptop to about 15 degrees or so before completely closing the screen brightness comes back on.

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Replace the inverter cable that seems to be be broken in the PB hinge. You still have a backlight connection when moving the lid but sooner or later you'll lose it when the cable will be completely separated. Do the repair as soon as you can cause there's a risk to damage the logic board if the cable short in the hinge. Don't move to much the lid when the PB is powered until the cable is replaced.

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Check the cable. the cable was pinched.

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