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LED TV has no picture, but it does have sound and it does have back lights. The flashlight test shows no menu. How do I know if it is the problem is with the Power Supply, T-com, or the main board?

DC measurements from the power supply board are as follows. CNM801 - Power ON OFF 2 NC 1 NC Keeps going up. mV rise to no end. 4 NC 3 OD ON 0.6mV 1.305mV 6 PWM DIM 2 5 GND -0.1mV -1.7mV 8 PMW DIM 1 7 B12.8V 0.1mV 12.26mV 10 B12.8V 9 B12.8V 0.1mV 12.26mV 12 BLU_ON 11 Vamp 0.1mV 12.26mV 14 GND 13 Vamp 0.2mV 12.26mV 16 GND 15 GND -0.1mV -1.2mV 18 A5V 17 B5.3V 1mV 5.3mV 20 PS-ON 19 B5.3V 1mV 5.3mV

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If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

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