Have you tried reseating the lamp?
tv is about 3 - 4 yrs old. already replaced lamp after one year. now tv is shutting off and the first and third light is blinking. I can turn it back on and it may work for several hours again. lately it has been going off more frequently. according to manual, the lights indicate the fan is not cooling. can I install a fan? also saw somewhere that it could be the board not telling the fan to come on. Can that be replaced? live in an area that it is going to be extremely dificult to get a repairman to come even if I can find one. tv weighs over 100 lbs and have no way to take it to shop. can you help?????