Vizio 4k TV model number P502ui-B1E. TV turns on and off, but no picture and no backlight appear.
Send us your board, for repair, check the service below:
https://www.nickstvs.com/store/p2269/P502UI-B1E.html
If you are local, feel free to pass by for help with your devices!
Nick's TV Repair,
5445 E 22nd St
Tucson, AZ 85711
Phone: (520) 838-9359
Have something else you would like us to fix for you? Mail us your devices for repair:
https://www.nickstvs.com/request-repair-service.html