DLP Troubleshooting: 6 common problems after installing a new projector lamp

6 problems after installing a new projector lamp

Here are solutions to the six most common problems that happen after installing a new lamp.

Problem #1: My projector won’t turn on after I’ve installed my new lamp.

Solution: Check the power cord, lamp cover and lamp connections.

Before contacting customer service, be sure to first check that the projector power cord is plugged in and properly secured. Check the back lamp cover – if it’s loose the projector won’t turn on.  If this doesn’t solve the problem, then open up the lamp cover and check the lamp connections. If the screws are too loose or too tight, the projector will not turn on.


Problem #2: My projector is getting too hot after replacing the lamp

Solution: Clean your air filters and ventilation holes.

The main reason a projector starts to heat up is because the air filters or ventilation holes are clogged with dust or other debris. DLP projectors operate at high heat and most have one or more fans that blow air around the components to cool them off. A build up of dust prevents proper air circulation and can cause the projector to become very hot and the lamp to explode. When this happens, the projector temperature controls will go off. Always clean your filters after replacing the projector lamp. Use a can of compressed air and blow filters and ventilation holes dust free.


when replacing your projector lamp goes wrongProblem #3: The picture is fine but the onscreen message says to replace the lamp even though it’s new!

Solution: You need to reset the lamp timer.

Your projector has a Lamp Timer or Lamp Hour Counter that automatically tracks lamp usage. It’s been designed to send you warning messages on screen and to trigger the Lamp Indicator when the projector lamp is approaching end of life. Many projectors will turn off automatically when the end of lamp hours has been reached – whether the lamp is new or not. Always reset your lamp timer after replacing the lamp. Check out our lamp replacements guides or your projector manual for instructions.


Problem #4: The picture is much dimmer.

Solution: Re-install the new bulb or replace the generic lamp previously installed.

This problem usually only happens when you have replaced only the bulb and not the entire housing. Check to make sure the bulb has been installed correctly. Purchasing a bare bulb is an economical option but you have to make sure it’s been installed properly. It should be flush with the front of the lamp housing cage and the new bulb should sit exactly in the same placement as the old bulb. If the new bulb is off center or not aligned properly your image will be dim. Removing the bulb and re-installing it more carefully should take care of a dim picture.


Problem #5: Projector turns on for a minute and then shuts off.

Solution: Clean the fans and filters. Replace the generic lamp.

Projectors will turn themselves off automatically if they detect any problems. Cleaning the projector of all dust and dirt will make the components work together in harmony. If dust is not the problem, then it’s the actual lamp. Have you installed a genuine OEM projector lamp? Generic, compatible lamps don’t operate properly in most projectors causing them to out of balance. This will make the projector shut down automatically. The solution for this problem is to replace the generic lamp with a genuine OEM lamp.


Problem #6: The screen color is wrong and the picture is flickering.

Solution: Contact your service rep.

Usually the color is off with an older, dimmer lamp. However, since the projector lamp only has one color – white – the problem is usually with the internal optics. The color wheel or other optical components may have been damaged while the lamp was being replaced. Also installing generic lamps can damage the sophisticated and sensitive components such as the color wheel and DLP chip. The only solution for this problem is to contact a service rep.


Posted in Counterfeit Lamp Awareness, FixYourDLP, Front Projector Lamp Replacement Tagged with: , ,
One comment on “DLP Troubleshooting: 6 common problems after installing a new projector lamp
  1. avatar Zahid says:

    Really nice help

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