Lamp over after 500 hours

Lamp over to almost 500 hours.
In and of itself since I was satisfied, the projector is very bright, even in relatively bright rooms,
but now I am very entäüscht, from 4000 hours, the lamp has just held by 500, now I have nothing but pixels stains on the projection surface, looks like the planetarium.
Consolation, the lamp is relatively low.