Chosen Solution
my sony kdl-52xbr4 is acting up , its goes really bright and flickers , then all of a sudden stops . The duration of time it does the bright white and flickering is always different every time it does it. Then it will go back to normal with no telling of when its going to do it again , happens everyday.
camsimair check all your cables first. Also try different inputs i.e. DVD, HDMI, PC, component etc. and see if that changes anything. If it does not then you want to take the back of your TV and take a look at the boards to see if the interconnect cables are all properly seated. Check the boards for obvious damage like leaking or domed capacitors. Post some images of your boards with your question. For that use this guide so we can see what you see.
