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Hello and thank you for the question.
How long have you owned the set for please?
Also, are there no signs of life on the TV at all at this point (power light lit, click sound when power is pressed, etc.)?
Additionally, what specific voltages did you check for with the TV plugged in?
I've owned it since mid-2010. No life (I clipped the power supply fuse since it was soldered in hoping that was the problem. Stupid, I know.) But prior to that, occasionally the green light would light up, but no click sound and still black screen. Other times, the green light wouldn't even light up. The voltages I was checking for are the ones listed on the power supply next to each of the connections e.g. 12V..., 24V...
No, the voltage readings were negligible on the power supply, so I didn't even check the main board.
When I was checking for 12V or 24V hardly anything registered. I didn't check for 5V or 3.3V, only 12V and 24V.
Correct, when plugged in, hardly any voltage registers on the power supply and there is no green light or red standby light and pressing the power button does nothing. No clicks.