Question about LG 42LH30 42 in. LCD TV

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I turn on the tv and only half of the screen can be seen

Some times I have to tap the back of the tv and have full screen but a minute or two came back to half screen

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A clear proof to some loose soldered point at its circuit board, or a loose contact with some cables. You should check and find which one causes the fault.

Posted on Nov 26, 2013

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Posted on Jan 02, 2017

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SOURCE: when i turn on the tv, the bottom half of the screen is black. after a few minutes, i have a full picture.

set uses two boards to drive the picture, one for top and other for bottom half---sounds like one is bad in this set.

Posted on Mar 31, 2012

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