I have a Samsung Tantus TV (model number HLN467WX/XAA. When I turn on the TV, the lamp light flashes green. Then, 2-3 minutes later all three lights (timer, lamp, and temp) flash. The timer and lamp flash green, and the temp light flashes red. Questions: 1. Has the lamp burnt out and needs to be replaced? 2. If so, how do I gain acccess to the lamp and how do I replace it? 3. If the lamp is not the problem, then what is wrond with the TV? Thank you in advance