Lamp Replacement | Flickr - Photo Sharing!To be honest, a DLP lamp replacement can have such a variation of a life span that it is actually quite hard to predict. Frankly, there is no way of knowing whether it will be 1000 hours or 3000 hours, but it’s usually safe to say that the lamp will definitely last you between 1000 and 2000 hours of life. I know that’s quite a large variance, but each television has different factors that affect the life of your replacement lamp. In fact, even the environment of your house can have an effect on it. It’s just like a light bulb in fact, the way you use it will determine how long it will last for you. About every 1 – 2 years you will most likely have to replace your lamp. I hope this helps some of you out, and I’m sure you can find more specific information based on your TV model type.