Question about LG Televison & Video
I have a LG 55lv9500 TV. Once the TV powers on the screen remains black continuously. I can tell the TV powered on due to the status lights displaying on the front panel. Prior to failure the TV used to display the LG splash screen and the time first. It doesn't make it that far at this point. I tried the flash light test, I was unable to see the menu or anything on the screen. I am unable to display content from any of the inputs. I don't have sound. Upon removing the back cover I do not see the led lights.
Posted by Anonymous on
Hello, either the power supply is failing to power up the LED's or the LED strips in the screen have failed, a common issue with these sets. Power supply part # is EAY62169701. LED strips are only available as a complete screen assembly from LG....thanks
Posted on Apr 28, 2017
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Posted on Jan 02, 2017
Hi, If all else fails, try do a hard reset. You can verify from your manual, but in some units, this is merely unplugging the unit from mains for a couple of hours. Try again, if it still shows error codes (blinking lights) you probably have to seek the services of a qualified professional. Hope this be of some help/idea. Good luck and kind regards.
Posted on Aug 26, 2007
The monitor is probably on protection.
To start unplug monitor from power and from computer and test computer with different monitor to find out if it is monitor or computer fault.
If it is computer fault and no video signal , then test:
If it is monitor fault , then the monitor is on protection.
When on protection you keep having a flashing led on front of the monitor , and monitor turning off by itself after a while, that indicates a fault condition.
The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.
1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.
2 The protection circuit detected a wrong voltage or a broken contact, identified an internal fault and kicked in , starting the flashing light.
If you are in situation one, then the monitor will reset just unplugging power cord for one or two hours,sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
Common faults that can occurr are a blown capacitor on power board, faulty inverter board, faulty input board, or a fault on LCD Digital Controller board.
Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.
Try moving the video cable, and if the cable is not built in, then also try a replacement cable.
If under warranty contact the manufacturer ringing the number on the user manual
If you want to repair at your own expenses, just locate any good qualified repairer.
Posted on Apr 22, 2009
Five buck solution; If you have any tek skills at all and are feeling adventurous; UNPLUG THE POWER, remove the back panel; You will be faced with the mainboard. In the lower right quadrant you will see two small capacitors, like tiny yellowish coke cans. If these are bulging, there lies your problem. These must be replaced. If you have no soldering skills, take only the mainboard to a fixit shop and have them solder in the two capacitors easily found on line. No guarantee's but worth a try
Posted on Dec 14, 2009
SOURCE: TV Not turning on
You can be pretty sure something's wrong with the power board. Defective capacitors may "look" OK but aren't. It could be helpful to lay your hands on a schematic.
Posted on Jan 02, 2014
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