Backgroud
I have a LG 42LB5600-UZ, The screen is dark but sound works. When doing the flashlight test I can see the picture.
Ground on Chassis
Tested the voltage at the backlight connector, it hangs at 102VDC. When I first turn on the TV, the voltage at the the backlight jumps up to about 260VDC after about 1-2 seconds, then ramps down over about 5-10 seconds down to 102VDC. I get the same voltage with the LEDs connected or not connected.
Ground on LED-
Tested the voltage at the backlight connector, it hangs at 0.01VDC. When I first turn on the TV, the voltage at the the backlight jumps up to about 150VDC after about 1-2 seconds, then ramps down over about 5-10 seconds down to 0.01VDC. I get the same voltage with the LEDs connected or not connected.
Questions:
Is this normal voltage? I've read where it's supposed to be a higher.
I'm assuming it's bad backlight. I figured I would just replace the LED's, read it's a heck of a lot cheaper. How/where do I find out what LED's I need? Is there a standard?
Thanks for your help, If you need more info just let me know.
I have a LG 42LB5600-UZ, The screen is dark but sound works. When doing the flashlight test I can see the picture.
Ground on Chassis
Tested the voltage at the backlight connector, it hangs at 102VDC. When I first turn on the TV, the voltage at the the backlight jumps up to about 260VDC after about 1-2 seconds, then ramps down over about 5-10 seconds down to 102VDC. I get the same voltage with the LEDs connected or not connected.
Ground on LED-
Tested the voltage at the backlight connector, it hangs at 0.01VDC. When I first turn on the TV, the voltage at the the backlight jumps up to about 150VDC after about 1-2 seconds, then ramps down over about 5-10 seconds down to 0.01VDC. I get the same voltage with the LEDs connected or not connected.
Questions:
Is this normal voltage? I've read where it's supposed to be a higher.
I'm assuming it's bad backlight. I figured I would just replace the LED's, read it's a heck of a lot cheaper. How/where do I find out what LED's I need? Is there a standard?
Thanks for your help, If you need more info just let me know.
Comment