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No backlight but has power, did some tests

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.

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