50LF6000-UB White noise with a black screen after power outage

50LF6000-UB White noise with a black screen after power outage

I acquired a 50LF6000-UB.BUSYLJR after a power outage. Nothing turned on besides the red indicator light. I replaced the power board and the screen turned on. I then replaced the main board and I now have white noise coming from it. Do I still continue and replace the t con board or do you think the screen could be shot? All the LEDs light up but no picture from the screen.

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