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Unresolved Heat bed won't heat up completely

Discussion in 'Troubleshooting' started by Esteban Carrera, Mar 9, 2017.

  1. Esteban Carrera

    Esteban Carrera New Member

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    I set the heat bed up to heat up to 50 degrees and the heat bed turns off at 40 degrees. I checked the ramps board and everything looks fine. Any ideas what it could be?
     
    #1 Esteban Carrera, Mar 9, 2017
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Usually a bad ramps board or at least Q3 failing.
    However, make sure you read the Gcode console/terminal to see if any errors are getting in there.
     
    #2 mark tomlinson, Mar 9, 2017
  3. Esteban Carrera

    Esteban Carrera New Member

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    What is the Q3? I check the terminal and there were no errors that popped up. I think it's the heat bed because it heats up the shuts off but the resistor is reading fine.
     
    #3 Esteban Carrera, Mar 12, 2017
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Q3 is the MOSFET in the left-side of this picture next to connectors D8 and D9 (the one running up/down rather than left/right).

    This is NOT the board from the R1+ (it is from the R1) but the transistor is in the same spot.

    Really it means you need to replace the RAMPS board.

    RAMPS_top.jpg
     
    #4 mark tomlinson, Mar 12, 2017
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Make sure you looked all the way back to the start of the terminal log, but if there are no errors it is almost certainly the RAMPS
     
    #5 mark tomlinson, Mar 12, 2017

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