LG 47LN5400 47" LED TV 1920x1080, 120 Hz. HDTV "black board learn" Questions

Black screen on the PLasma TV can be caused by failed sustain boards and or power supply. I would inspect the caps on the sustain boards and the power supply boards first. Failed TV and Monitors: http

...black again. What is the problem? It can be bad power supply module due to bad caps, Bad Z sustain and Y sustain boards. You need to check those 3 boards for bad caps, blown fuses, etc. Parts: ...

...black/blank power button is blue, green led inside blinks in synch with a very light humming/pulsating sound that can be heard on or near the y-main board. any ideas what might be wrong. i ...

...black again Main video board problems, or logic board Check the 24vdc feeding the backlight inverter board, usually caused by bad caps. The problem can also be from bad backlight inverter board. If ...

black line concerns me more and it will fade out like as it runs across the tv or sometimes it will just stay there. It goes away sometimes also. Is there some way I can fix this myself? Gwen You will

...black. You can still see the backlight, but there is no picture. You can still hear the sound. You may have dead T-CON board due to blown fuse or it is not getting the signal or 12vdc from the main ...

...black are showing up and causes by the tv itself?Yes.Than the tv have a dying board that call the T-CON board and this board only job are docoding any pictures pixels before it showing up to the tv ...

...black screen can here sound and change channel Tv turn on now,have a flashes a picture only a few sec. than picture died and have sound left ony?Yes,than ur tv have a 1 or 2 long boards call the LCD ...

...black screen. Any ideas what could be wrong? I have tried it on different inputs and it still does the same thing. It may have 24vdc power supply problem which is used by the backlights inverter ...

black and i have no sound. it's a flat screem The main power supply will be the first place to check. You should have at least the standby 5vdc, which is used for the main board, when the power switch