When you buy a projector lamp you buy a complete module. This means a new lamp with a new housing. Usually the lamp replacement procedure is described in your projector's manual. If you don't have it anymore you can try to find it online. Most manufacturers offer the option to download a manual. If you still cannot find the procedure don't worry, replacing a projector lamp is an easy job. Usually you have to turn over your projector, unscrew some screws so that you have access to the lamp compartment. You can now see the lamp itself. This is also held in place via some screws and possibly you also have to detach the power cable of the lamp. You can then gently take out the lamp. In reverse order you can install the new lamp. To make things easier we have also put together a generic guide . When replacing a lamp, please take care not to touch the glass of the lamp.