“How To Fix Your LEGO EV3 Mindstorms Brick When It Doesn’t Turn On”

I had the task to save another LEGO Mindstorms EV3 Brick from an untimely death. Here’s what happened!!



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  1. hello Sir…
    i have this experience too…

    when i turn on the EV3 it just blinks RED around 1 sec..
    tried removing the EV3 battery and replaced it with 6 AA…
    not working..

    tried to do firmware update (with 6 AA)
    back + center + right button
    but again not working with the EV3 batt..

    tried to do update again (with EV3 batt)..
    back + center + right button…
    but then my finger slipped with RIGHT button leaving BACK and CENTER pressed at the same time..
    EV3 came to life normally..
    so far, tried 10 restarts…
    everything is ok now.

    hope this helps.
    thank you.

  2. Perhaps the reason the 6 ea. AA Alkaline Batteries worked is that, when new, they produce a total of 9V.  A fully-charged EV3 Rechargeable Battery only produces 7.4V.  So, there is too-low voltage coming from the Rechargeable Battery.

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