Why does the lamp in a DLP® HDTV need to be replaced?
The light source for this television is a lamp, which is part of a lamp cartridge assembly. The life of the lamp can vary based on the lamp itself, the air temperature around the HDTV while it is operating, the selected lamp mode, and your viewing patterns. Warmer air or poor ventilation shorten the lamp life, as does setting Lamp Energy to Bright and turning the television on and off frequently.