Facing TV Problems? Ask a TV Technician.
Hey there Scott,
This is likely an overheating issue.
The filters and vents will need to be cleaned.
Also check that the fans are running ok.
If you are unable to carry out the cleaning and fan checks yourself, a local electronics store can do it for you.
You could also try using an external fan to blow cool air over the projector to help keep it cooler and running for longer.