We have had a few LG 42LS575T led tvs in recently with all similar issues. While surprising to see such young tvs already appearing in our repair shop, it is encouraging to see that they are quite repairable and at what I believe to be at an affordable cost. 

If your tv is suffering from loosing its picture, while the sound stays on ok, then it is worth us (or any other professional tv engineer) having a look as we could save you from having to pay out for a brand new tv. Initially the picture...
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