The screen goes black after 5mins then i have to turn it off then on,then it happens again every 5mins

SOURCE: Vizio 42", have picture for about 5 mins then screen goes black.

also check the power cord wire coming from the back of the tv is loose from the tv side or perfect.

SOURCE: goes on and off on and off permantly

your backlight is going out.. get it replaced

SOURCE: Screen lower half goes black/blank

The lower "Y Buffer" board is defective. Best repaired by a technician, or contact Phillips support for the part if you think you are able to replace a small circuit board on your own.

SOURCE: 42 IN CH POLAROID HDMI BLACK SCREEN

i had the same problem. i opened the panel in the back of the tv (3 screws) and opened the aluminum panel (3 screws). there's a red led light located at the bottom left corner of the top board. to the right of the led light, you will find this thing with 4 switches. i turned the two bottom switches "burn" and "epmw" to on. so far tv have been working.

SOURCE: Element tv.. model # ELCHS261 stopped working

My Element ELCHS261 will not turn on at all. The only thing it does is the red light will turn to blue but no sound and no picture. My troubleshooting items have been changed the batteries in the remote then I unpluged the power for for 30 minutes and still nothing.