The reason why the projector is not powered on: This usually happens, mostly because there is something wrong with the power board. This is because the power board can't supply power to the motherboard, so the projector can't be powered on. In this case, it is also possible that there is a problem with the lighting board, resulting in 60% power shortage. In the third case, the failure of the motherboard will also lead to the failure of power supply, accounting for 40%.
The reason why the projector bulb doesn't light up: The first possibility is that the projector bulb is broken and naturally doesn't light up. The second possibility is that the lighting panel of the projector is broken. The third possibility is that there is a problem with the projector motherboard or driver board, which will also cause the light bulb to not light up.