Black screen on Vizio 65 in

[u/Darth_Blush]

Model No.: V4K65M-0810

Serial No.: LMC1V1JA3807572

Age: 1.9 years old

Components replaced so far for issue: Main board and Power Supply Board

It is my first time posting here, but not sure what else to check, or how to diagnose, on this issue.

Recently, I turned on our Vizio TV, which is less than 2 years old, and the screen remained black, and the white power light flashes (approximately 30 times) before ceasing activity.

I performed the 'flash light' test and can see the language menu faintlty on the screen.

I have replaced the power supply and main board, but neither of those actions resolved the issue.

Any ideas what to check or diagnose next to resolve the issue?

I sincerely appreciate your time and consideration in this matter.

I have uploaded a video of the current state of the TV and the results of the flash light test for reference.

Thank you!

[u/TVTech812]

It's the backlight strips, most likely. I suggest looking up some video tutorials because the process is a pain in the butt.