dude if that happens to your tv, either your tv is old as -blam!- or your store selled you some sh*t. this was fixed years ago. and yes, I work in that business edit: "best picture you can buy!" that lasts for half a year or so. its a gas, that can escape in older tvs = below average picture plasma need a damn huge amount of power. try oled if you can afford it, better in any point.