Replacing the Optoma HD25 projector lamp

optoma HD25 projectorHow to replace the Optoma HD25 projector lamp

When the Optoma DH1011 projector lamp approaches end of life, a replacement message will flash on screen. You may also notice the picture quality starting to have poor resolution with washed out colors. Change your projector lamp immediately. The projector will not work if the lamp has burnt out or broken.


Buying the right lamp

Your Optoma HD25 projector uses the Optoma BL-FU240A.

Learn 7 ways to spot a counterfeit projector lamp.

Installing the Optoma HD25 lamp

Before replacing the Optoma BL-FU24 follow these important safety tips:

  • Switch off the power to the Optoma HD25 projector by pressing the Power/Standby button.
  • Disconnect the power cord.
  • Allow the projector to cool down for at least 30 minutes. If should be cool to the touch. These projectors run using high temperatures and you can burn yourself badly if you don’t allow the projector to cool down.


1. Use a screwdriver to undo the two screws holding the lamp cover in place. The screws on the lamp cover and the lamp cannot be removed.

2. Remove the lid and place to one side. Don’t lose the lid as the Optoma HD25 projector will not turn back on until the lamp cover has been properly installed.

3. Remove the two screws holding the Optoma BL-FU24 in place.

Note: The used Optoma BL-FU24 lamp contains mercury and should be properly recycled. Don’t throw it into regular garbage. Please recycle this lamp.

4. Lift up the wire handle on the Optoma BL-FU24 lamp and slowly remove it from the projector.

Be careful not to bang the lamp against the projector as this may case the bulb to break. Learn how to clean up a broken lamp.

5. Remove the new Optoma BL-FU24 from its packaging. Taking care not to touch the actual bulb, lift up the handle on the new lamp and insert it gently into the Optoma HD25 projector.

6. Tighten the two screws on the lamp.

7. Replace the lamp cover and tighten its two screws. You are now ready to reset the Lamp Replacement Timer.

Reset the Lamp Replacement Timer

The Optoma HD25 projector has an automatic lamp timer that tracks the numbers of hours left in the lamp. If you don’t reset the lamp replacement timer you run the risk of the lamp being used beyond its recommended life and possibly exploding in the projector.

To reset the Lamp Replacement Timer:

  • Turn on the projector.
  • Press MENU.
  • Select OPTIONS.
  • Select Lamp Settings.
  • Select Lamp Reset.
  • Select Yes.
  • Press MENU to exit.

Tips for extending projector lamp life:

  • Keep your air filters clean to avoid overheating the projector.
  • Every 24 hours, turn off the projector and let it stand for 1 hour
  • Make sure there is enough airflow around the Optoma HD25 projector particularly if it’s been permanently mounted.
  • Learn more with Top tips for extending DLP projector lamp life
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4 comments on “Replacing the Optoma HD25 projector lamp
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  1. avatar Sofia says:

    We have Model HD25e and the bulb cover won’t come off. Any suggestions?

    Thank you

    • avatar Shelagh McNally says:

      Hi Sofia,
      If the screws have come out all the way, then try using a flat head screw driver to try and gently pop the cover off. It sounds like the screw threads may have gotten stripped. This video gives you some suggestions on how to get the screws out if they have been stripped:
      Hope this helps.

  2. avatar Mitch says:

    Hi, I have a HD25 and have replaced the lamp a few months ago, now it’s started an arcing/buzzing noise. Is this the ballast? If so are these available to purchase for replacement?

    • avatar Shelagh McNally says:

      Hi Mitch,
      It could be a couple of things. There might be something that has come loose in the lamp itself. Sometimes glue softens from the heat on lamps that are not well made. Other times it’s a loose part in the lamp. Also check your filters to see of they need cleaning. If it was the ballast you would have noticed the image flickering or the color disappearing. We have heard of some generic lamps givng off a strange buzzing sound as they age. Hope this helps.

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