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How Fix the Lego Mindstorms NXT "Clicking Brick" Problem

Updated on August 3, 2012

Lego Mindstorms NXT Robot

Fixing a clicking NXT brick

Help my expensive Lego Mindstorms NXT brick is dead! Is it? Put your ear right up to the Lego Mindstorms NXT Brick with fresh batteries and it turned on. Do you hear some clicking noise? It sounds kind of like a cricket crawled inside the brick. If you do, don't fret, your brick is not dead, its just in a COMA!

To wake your clicking Lego Mindstorms NXT brick from its COMA by pushing the hidden reset button found inside of the battery compartment. You'll need a paper clip to push this button.

Avoiding The Click of Death

To avoid the click of death in the future, don't pull out the USB cord before your program or firmware updates are finished downloading.

Also check the Lego Education web site for the latest patches and versions of the NXT Mindstorms software.

Flickering screen problems are a different matter and are addressed in this article. Click here for help with a Lego Mindstorms NXT with flickering screen.

Fix the Problem

I use NXTs in my summer robotics camps and there is nothing worse then having a brick fail in the middle of a hectic session. Another thing to try is wiping the memory clean and re configuring the brick.


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    • GetitScene profile image

      Dale Anderson 5 years ago from The High Seas

      Good stuff, thnx.

    • peanutroaster profile image

      peanutroaster 5 years ago from New England

      Make sure you have fresh batteries and follow the instructions carefully. Identify ALL of the buttons. There are two secret buttons.

    • profile image

      RAGEQUIT$%^& 5 years ago

      The whole reason my brick started to do this was because I pressed the reset button!!!

    • peanutroaster profile image

      peanutroaster 5 years ago from New England

      Try running the firmware update sequence.

    • profile image

      Joe 5 years ago

      The clicking is not going away when I push the reset button. Have you ever seen this?

    • peanutroaster profile image

      peanutroaster 6 years ago from New England