The mere fact that you are asking the question tells me you already know the answer. When it doubt, there is no doubt. Would you have asked this same question 7 years ago?
My Akai PT4299HD/PT4799HD/PT5299HD Projection Television Will Not Turn On By The Power Button Or Remote? Red Standby Indicator Either Flashes Or Steady. What Is Wrong?
The projection bulb is gone. When the red indicator light flashes, it is always the bulb.