Hi everyone. My first thread, hoping for some help.

My grandpa has this e470i-a0, he was watching and the screen went black, sound continued. After a minute or so the sound also stopped. I have it now, I can plug a laptop into an hdmi port and see the picture with the flashlight test. Testing backlight power supply, the voltage should be about 100v but it oscillates between 120-130v, return pins are also out of spec. Obviously the leds are bad. Display panel is LC470DUG-JFR1-KR1-B.

If it worked otherwise the fault would obviously be the led strips, but I can't get sound...

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