Many times you will see that the projector is so hot that it causes heat generated inside. It is important to take some precautions when a projector got heated. You should follow these tips: First, make sure that you don't place your projector too close to the ceiling. This can cause the projector to overheat and cause a fire. You should also make sure that your projector is plugged in and that the power is turned off, in case of not in use. If you get to know that the projector is got heated repeatedly, you can call the service center, or you can diagnose the cause by yourself. Sometimes the built-in cooling fan is not working properly which can cause the problem of overheating. If that is the case replace the cooling fan.