Change the Panasonic PT-AR100U projector lamp in 3 easy steps

Panasonic-PT-AR100U_projector_WITH_Panasonic_LAA-110_projector_lampChanging the Panasonic PT-AR100U projector lamp is as easy as 1-2-3!

Step 1: Know when to replace the lamp

When the Panasonic PT-AR100U projector lamp reaches over 1800 hours the REPLACE LAMP message will display for 30 seconds but disappears when you press any button. Over 2000 hours, the message will be displayed on screen for longer. Watch for these telltale signs that your Panasonic PT-AR100U projector lamp is approaching end of life:

  • the lamp indicator will light up red and stay lit until the lamp is replacedPanasonic PT-AR100U_projector_LAA-110__projector_lamp_indcator
  • picture has poor colour quality
  • image vibrancy and definition has deteriorated
  • a warning message appears on screen: Replace Lamp

When you see any of these signs, especially the warning message, change the lamp immediately. Avoid the temptation to left the projector run longer as it can result in a complete shut down of the Panasonic PT-AR100U projector.

Step 2: Buy an authentic projector lamp

It can be confusing trying to find the correct projector lamp since there are so many choices. It’s easy to get duped into buying an inferior knock-off lamp posing as an authentic lamp. Always look for the seal of approval and watch for telltale signs you are about to purchase a counterfeit lamp:

Buyer beware! You get want you pay for and with generic “compatible” lamps that usually means a host of problems that can leave you with a damaged Panasonic PT-AR100U projector:

Step 3: Installing the Panasonic ET-LAA110 projector lamp

Follow these important safety tips before changing the projector lamp:

  • Switch off the power to the projector by pressing the Power/Standby button.
  • After waiting 30 seconds, disconnect the power cord.
  • Disconnect the video cable cord as well.
  • 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.

Panasonic PT-AR100U_projector_LAA-110_remove_projector_lamp_coverA. Hold the protrusion at the front cover of the projector and push up to open. Be careful not to open the panel too far. If the panel comes off, hold the cover in the middle, align the hinge with the support. Push the arm in the direction of the arrow towards the inner side of the projector and push it into the groove.

Note: When the projector is mounted on the ceiling, stand at the left side of the projectors when opening/close the top cover.

Panasonic PT-AR100U_projector_LAA-110_remove_projector_lamp

B. Use a Philips screwdriver to loosen screw holding the Panasonic PT-AR100U projector lamp cover in place.

C. Loosen the two screws holding the Panasonic ET-LAA110 projector lamp in place. Holding the handle of the projector  lamp unit with the lock held in the direction of the black arrow, pull up the lamp in a vertical motion. Be careful not to hit the projector lamp or you can cause it to break. Learn what to do if the lamp is broken inside the projector.

NOTE: The Panasonic ET-LAA110 projector lamp contains mercury and should not be thrown into regular garbage. Recycle this projector lamp!

D. Insert the new projector  lamp making sure its facing the right direction. Gently press down on the A section (see image above)at the the top of the lamp gently to make sure the lamp is installed all the way. Tighten the two screws to make sure the lamp is secure. Put the lamp cover back on and tighten the screw so it stays in place. Close the projector lamp cover and re-install the video cable and power cord. Turn on the projector to reset the lamp timer.

Reset the Panasonic PT-AR100U projector lamp timer

Your Panasonic PT-AR100U comes equipped with an automatic lamp timer that tracks the number of hours left for the Panasonic ET-LAA110 projector lamp. Each time you change the lamp you need to reset the lamp timer. Failure to do so may cause the projector to use the lamp over the recommended period of 2000 hours time resulting in the projector lamp exploding.

Panasonic PT-AR100U_projector_LAA-110_projector_lamp_reset

  • Press the MENU button to display the menu screen.
  • Selection OPTION using the arrows buttons to scroll up or down.
  • Press the ENTER button and select LAMP RUNTIME.
  • Hold the ENTER button down to 3 seconds for the confirmation message to appear.
  • Using the arrow buttons scroll over the OK field.
  • Click ENTER.
  • The Lamp Runtime will be reset to 0 and the projector will power down. In a few minutes it will enter standby mode and be ready for use.

Extend the life of the Panasonic ET-LAA110 projector lamp:

Panasonic PT-AR100U_projector_LAA-110_eco_management_projector_lampYou can reduce power and extend the life of the Panasonic ET-LAA110 projector lamp with the ECO management option.

  • Press the MENU button to display the menu screen.
  • Selection OPTION using the arrows buttons to scroll up or down.
  • Press the ENTER button and select ECO MANAGEMENT
  • Hold the ENTER button turn on
  • Click ENTER to exit the MENU.
  • The projector Lamp Runtime will be reset to 0 and the projector will power down. In a few minutes it will enter standby mode and be ready for use.

Note: Lamp power will not decrease in the following cases: Immediately after the lamp illuminates or after the Lamp Power is set.

Learn more tips for extending the projector lamp life in your Panasonic PT-AR100U projector.

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20 comments on “Change the Panasonic PT-AR100U projector lamp in 3 easy steps

    • avatar Shelagh McNally says:

      Hi David,
      Even after installing a new lamp, you need to reset the automatic lamp timer back to zero. Otherwise the lamp still reads the hours used for the previous old lamp that has reached end of life and is finished. If you have no bulb installed, the projector will not turn on at all.

  2. avatar Ben Leitch says:

    I am having a very difficult time with the two screws to loosen. Any suggestions. It seems like they are wanting to strip.

    • avatar Shelagh McNally says:

      Hi Ben,
      Many projectors have screws that won’t come all the way out of the socket. You only loosen them enough to take off the projector lamp cover. This is doen so the screws don’t go missing since the projector won’t turn on if the lamp cover is loose at all.

  3. avatar Andrew says:

    My lamp warning message is coming on, but the picture still looks outstanding. Do I really need to change the lamp out at this time?

    • avatar Shelagh McNally says:

      Hi Andrew,
      The lamp warning is letting you know the lamp is approaching end of life and you need to get ready for a new lamp. Sometimes the picture doesn’t deteriorate until just before the lamp blows. While you can use the projector now, the lamp is coming to an end and you should prepare for the eventual replacements.

  4. avatar Chris Kelly says:

    My cover/panel came off and I am having a lot of trouble getting back on. Are there more detailed instructions anywhere?

    • avatar Shelagh McNally says:

      Hi Chris,
      Those were the most detailed pictures we could find. What exactly is the problem? Send me some pics and I may able to help. I would suggest joining our forum at where there are experts who know more than me and can help you out. You can post pics there.

  5. avatar Kevin says:

    After installing the new lamp it did not go at all, so I put back in the old lamp that still worked and reset the lamp hours to zero. Then reinstalled the new lamp, it then worked.
    Model Panasonic PT-AR100.

    • avatar Shelagh McNally says:

      Hi Kevin,
      That is a cool tip. Thanks for sharing that. I will suggest that to other people having problems.

  6. avatar Brad says:

    Changed the bulb, but still get temp warning and the projector will automatically shutdown. Could it be the projector and not the bulb?

    • avatar Shelagh McNally says:

      Hi Brad,
      Have you checked your air filters and cleaned them? If they are dirty or very very old they will not allow proper air circulation. This can cause the projector to overheat and shut down to protect itself. The other to check is that you have updated the lamp timer, resetting it to zero. If those things don’t fix the issues, check the lamp. Is this a genuine OEM lamp. Counterfeit lamps can cause the projector to shut down suddenly because it sense the calibration with the counterfeit is not in synch. Hope these suggestions help out.

      • avatar Brad says:

        The filter is new that came with the new OEM bulb and the lamp timer has been reset. It will work when I set high altitude to on, but never had to do that with the last 2 bulbs. Can I remove the case and clean the inside of the projector?

        • avatar Shelagh McNally says:

          Hi Brad,
          Yes — clean the projector. It’s probably got a blocked air filter and that is causing it to overheat. Clearing out any dust and cleaning the air filter will stop the overheating.

  7. avatar Pip Price says:

    My projector is a Panasonic PT-LM1E and I had used the lamp until it was over its life hours but still worked. I have replaced the bulb but now the Standby lamp and the Lamp light are constantly on and the projector will not come on.
    Having paid more than the projector was worth just for the bulb, I can’t afford expensive repairs. Any ideas?

    • avatar Shelagh McNally says:

      Hi Pip,
      Did you reset the lamp timer? If it hasn’t been set back to zero then the project will keep itself in standby mode to protect itself. If that doesn’t do the trick, try reloading the lamp, making sure all connections are tight and touching properly. What happened before changing the projector’s old lamp? Did it explode or overheat? If that happened it could be your color wheel or ballast that has been damaged. That is a more costly repair. Go with resetting your lamp timer and see if that solves the issue.

  8. avatar Vincent says:

    I reset the lamp timing with the old lamp just before it gave up the ghost. I replaced with an OEM (Ushio that cost $250) and the red lamp light is now out but when I turned on, the ON light went solid green for about 5-10 secs and then it flashed for about 2 mins and then the lamplight started flashing red and then the projector turned itself off. Any tips?

    • avatar Shelagh McNally says:

      Hi Vincent,
      It sounds like you haven’t reset the lamp timer back to zero. Scroll down to the bottom of the post and you will see instructions on how to reset the lamp timer to zero. That’s the final step and if you don’t do that the projector just thinks the lamp has still reached end of life even when the lamp has been changed. Trying doing this and see if that solves the problem.

  9. avatar Smitty says:

    Lamp died a month ago. Replaced it and the projector worked fine. I tried to reset the counter but it was ‘greyed out” – could not access the counter to reset it. Now red light + screen warning + auto shut off after a couple of minutes. The picture looks great for the 2 minutes the projector runs.

    • avatar Shelagh McNally says:

      Hi Smitty,
      Have you tried the following steps:

      Press the Power button so that a picture is projected onto the screen
      Press the Menu button to display the “Main Menu”, and then press the F or G button to select “Option”
      Press the Enter button to display the “Option” menu, and then press the 5 or 6 button to select “Lamp Runtime”
      Press and hold the Enter button for approximately 3 seconds
      The “Lamp Runtime” will change to “Time Reset [Power Off]”
      Turn off the power and disconnect the power cord
      This should reset the lamp timer. The other problem might be with the lamp itself. Did you buy from an OEM manufacuter? Some of the lamps that have bargain prices are counterfeits and won’t work with the projector optics. The projector can read that it’s not the calibrated lamp and will shut down. Try resetting the timer and if they doesn’t work then check the lamp.
      Hope this helps,

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