Does it happen on every input or just on the PS3?
i have a tv Samsaung ln37a550.had it for 4 month.use for tv channels and video games on ps3...last week screen just turned black, but tv still work, sound, everything...and science than it does it..and after been off for a 5 minets its get back to normal...doesn't make much sence becouse it does it randamly(sometimes couple times a day,sometimes never ,sometimes every 5 minutes)...please tell me what it could be...thanks for help

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic