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My robo 3d OG the min you turn it on it starts heating the bed too hot

Discussion in 'Troubleshooting' started by Pete M, Feb 8, 2017.

  1. Pete M

    Pete M New Member

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    image1.JPG My robo 3d OG the min you turn it on it starts heating the bed too hot? need help!
     
    #1 Pete M, Feb 8, 2017
    Last edited: Feb 8, 2017
  2. Geof

    Geof Volunteer Moderator
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    Hi. Im moving your thread yo trouble shooting. It sounds similar to a failed ramps board.

    Do you have a spare you can swap ?

    Is your machine hooked up to the computer ? Maybe unhook and see if the problem is still there ?
     
    #2 Geof, Feb 9, 2017
    mark tomlinson likes this.
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yea, the MOSFET for the heated bed (Q3) has failed open.
    Easier to just replace the entire board.
     
    #3 mark tomlinson, Feb 9, 2017
    Rigmarol likes this.

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