Chosen Solution
Tv keeps cycling on and off as soon as powered on and I cannot get a picture nor access the menu - just blank screen. I’ve tried the basics unplugging tv power source, opening small cover and unplugging power supply ribbon, holding down power button for 15 seconds etc but still cycles continuously.
@emmjay44 the very first thing you ant to do is to remove the back from your TV. Then check the power board. Look closely for damaged or charred looking components. Symptoms like this are usually related to an issue with the power IC’s. Post some good pictures of all of your boards with your question. that way we can see what you see. Adding images to an existing question
