No backlight but has power, did some tests
I have a LG 55lw5600 that's has no picture. It also has no backlights when powered on. I found a service manual online and started checking voltages. From the tests I have done so far I can tell the smps is good and the inverter is good (by tests that use jumper wires), the led lights come on during this test when ac power is applied. I have done the flashlight test and see nothing. Any ideas on which board or components may need to be replaced or what I should check to narrow it down farther.
Thanks for your time,
Neal Pollman
Update (08/08/2017)
Third pic has my voltage results. The DRV-ON voltage is very low. And the t con fuse is not getting 12 volts. The last pic the the test I did, and that is the one when the backlights came on. I am just lost on where to go next.
좋은 질문 입니까?
Thank you for your response, I will get all my voltages for you and post them for you to view
Neal Pollmam 의
I basically have the same problem. Does the power standby led stay blinking red or does it go to white (blue)?
Mark O. 의
I also have the training service manual if you would like me to attach it
Neal Pollmam 의
Did you ever figure out what board fixed the issue?
Greg Barton 의