LG had a serious quality problem with the main board and there is a bad solder joint on all original 42lv4400 and 47lv4400 units.It will manifest the problem either went it gets warmed up and then power down itself or never power up. The red light stays on and the TV does not respond to manual or Remote input.
A factory reset will not fix this problem. It takes a "NEW" main board. The big white label on the back panel has the original manufacture date and LG will send out a factory authorized technician to repair the unit within the first year after that manufacture date.call 800 243 0000 to schedule a home visit to get the repair done.
By the Way, a 42lv4400 main board will not work in a 47lv440 even though they look identical. The reverse is also true.

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