LG 47LW6500 powers on no backlight

[krygods]

TV turns on but no back lights

I can't see a picture on the screen with a bright flashlight

There is no voltage at the Tcon fuse

CN201

Error - 2.5mV
PWM - 3.19V
N.C.
DRV-ON - 39mV
VSYNC - 0V
GND
3.5V - 3.54V
3.5V - 3.54V
GND
GND
24V - 24.36
24V - 24.36

N.C.
12V - 11.92v
12V - 11.92v
12V - 11.92v
GND
GND
3.5V - 3.54V
3.5V - 3.54V
GND
GND
24V - 24.36V
PWR-ON 3.74V

[budm]

Re: LG 47LW6500 powers on no backlight

"DRV-ON - 39mV" missing BL-ON, and may be the processor is not sending the command to turn on the switched MOSFET to supply B+ to the T-CON.

[krygods]

Re: LG 47LW6500 powers on no backlight

Main board issue?

[budm]

Re: LG 47LW6500 powers on no backlight

That is the first suspect.

[krygods]

Re: LG 47LW6500 powers on no backlight

Alright, lets see if I can find a replacement. Parts for this TV on ebay are pretty scarce.