After warming up (about 30 min.)my LG LCD TV blacks out. No picture, sound is fine. If I turn it off for 10 min, it is ok for another 20 or 30 min.

That is the problem now days. I fixed color TVs for years. This problem is obviously a failed component. In the old days I would get a schematic, trace the problem and replace a 25 cent component. Now days the set costs more, and the repair cost as much as the set. Everything is throw away after the warranty has expired. Is there anyone out there with a schematic? That is the problem now days. I fixed color TVs for years. This problem is obviously a failed component. In the old days I would get a schematic, trace the problem and replace a 25 cent component. Now days the set costs more, and the repair cost as much as the set. Everything is throw away after the warranty has expired. Is there anyone out there with a schematic?