V505-J09 Backlight or Board?

I have a Vizio TV that I was working on the sound (optical and eARC) because sound was not working. After a restart the TV came up with black screen but I could see the “new setup” menu using the flashlight method, so for sure the backlight is out. Now then, it is a single main board - TPD.MT5691T.PC763. Should I first go for replacing this board (if so, what online store?) because replacing backlights seems a bit daunting having to pull the whole panel glass, etc.