Have you ever been watching your DLP TV and see this message come accros the screen? “TV will shut down in a few seconds. Please check if the air flow is blocked ” Not only is this a scary thing to see your TV say, but it can be confusing and sometimes hard to determine why this is happening. The reason you are getting this notice is because for some reason the lamp is getting too hot. This can cause a lot of damage if the TV does not shut down and will lead to early and costly replacemnt of your lamp. If you ever see this message the first thing to do is make sure something has not been placed in front of the air vents on your TV. On a Mitsubishi DLP TV the vents are on the lower left side of the TV. It basically looks like a screen on the side of your TV. Other models may have the air vents elsewhere. Make sure there is nothing blocking that area. If something is remove it and see if you see thiscome up again. If nothing is, then you may have a problem with dust build up...