LG 37LC7D 37 in. HDTV LCD TV My screen seem to over heat, Goes blank, but TV is still on. then comes back on for a few seconds, then again blacks out

Something has blown.. possibly a resistor, diode or ??? on one or more of the boards. You should take the TV to a service Agent who should be able to resolve the problem.

When the screen goes blank, dim the lights in the room. Take a bright flashlight and shine it on the panel. If you see a faint picture, you have a backlight failure

My lg 37lc7d is having the same problem. My backlight is on but no display. Also the standby light blinks several times then the screen goes on but it's just all black. No a/v

its repair immediatly its a power supply problem,

Try One of your working TVS and connect it to your cable outlet of the TV that is having problems. If that TV Does not work then there may be a degraded fitting or the Leg coming of the splitter to that outlet could have a Low Signal Problem
Next Take the First TV that was not working properly and put it on the cable outlet of one of the TVs that is working properly and if the TV set works on that Channel then you know it is not your TV that it must be the cable

sounds like u have a dead solder joint or loose connector. poor workmanship LG (formerly known as GOLDSTAR is known for)

Hi, I would buy your TV

if you want i will buy the tv from you

The main board needs to be replaced.