Model 47lg50-ug au8qlvm\r\nSerial no 809mxay41088 When switching to any of the connected inputs, the TV's image and sound flashes on/off. The TV remains powered up but the screen flashes on/off. I tried turning off the input and that stopped the flashing (of course, at that point the TV displays NO SIGNAL). I called customer service and they suggested unplugging the unit and pressing the power button for 45 seconds. This didn't correct the problem. The TV is almost 2 years old, therefore out of warranty.

SOURCE: 37LC7D, screen blank, cannot power off manually or w/remote

Hi, I would buy your TV

SOURCE: LG 47LC7DF Green Light Blinks 16 Times - No Picture or Sound

The lights indicate what the issue is. Kind of like your check engine light in your car tells you something is wrong with the engine.

SOURCE: DVI warnings when you connect HDMI cables

TV IS IN DEMO MODE GO IN OPTIONS MENU OF VIDEO AND TURN OFF. READ OWNERS MANUAL PAGE 80,81,82

Mike

• 166 Answers
• Posted on Jan 20, 2010

SOURCE: "Function Not Available" error on LG 47LG50 LCD TV

A software upgrade may resolve the issue if not the main Pcb. would need replacement.

Contact LG during normal business hour 8-6 central time.
1 800 243-0000
They may help you out also let them know if you are having a lipsync issue.....Wink wink

SOURCE: television will not turn after a 10 minute power outage

Depending on what made the power outage, your power supply might have got fried. It might be as simple as a few capacitors blowing or a little more serious. I would suggest taking it to a repair shop. A power supply replacement will run you about 200-250. If its just a few capacitors, should be around 100.