Screen burn-in occurs in flat-screen TVs, such as plasmas and LCDs. This happens when the screen is left on for prolonged periods of time and images, such as logos, text and other static objects, begin to burn their image outline into the screen display. There are steps you can take to help reduce the effects of screen burn-in.
Wait a few hours after the initial burn-in and see if the effect is temporary. Sometimes burn-in is not permanent and needs some time to return to its previous state.
Use the black and white screen option from your TV's remote. Unplug your cable or satellite or find an empty channel. Leave the TV on and set to the channel for a few hours under the black and white screen option, so your screen can even out from the black and white dots that radiate during the process.
Turn your TV off after you wait a few hours and then turn it back on to see if the burn in is still noticeable or if it's been reduced.
Prevent burn-in by changing the channel occasionally to prevent logos, text and other static graphics from burning into the screen and turning the TV off when possible.