Without a model #, this is a guess, but that generally means your lamp is defective. You have two options then: either get an Authorized Service Center to come to your home or do it yourself.
If you want a service, go to this thread: http://forums.cnet.com/7723-13973_102-542437/service-issues-click-here-for-help/
If you want to do it yourself, you'll need to buy the part from http://www.samsungparts.com, and here's a how-to: http://www.samsung.com/us/support/supportOwnersHowToGuidePopupPrint.do?howto_guide_seq=45&howto_guide_step_no=1&prd_ia_cd=N0000300&map_seq=348
Hope that helps!
-- HD Tech
My Samsung DLP - I just got back from vacation. Worked perfect before we left. Turned it on when we came home and the picture went out you can still hear sounds for a few seconds then it turns off. Every time you turn it back on it does the same thing. All 3 LED lights are blinking. Any help?