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Solved LED's flickering during use. Power Supply issue?

Discussion in 'Troubleshooting' started by Ryan Doyle, Nov 24, 2015.

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  1. Thomas

    Thomas Member

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    Could thermistor be loose somewhere? Or just the thermistor is shot? Oh and yes every time i turn the control knob it does dim or brighten the bed LEDs which is odd.


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    #21 Thomas, Apr 30, 2016
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That would be one possibility. A loose thermistor that moves around is another. Getting separated from the heater block will make the temperature drop as well. The new Robos use a different way of mounting that makes this a lot less likely and the bad thermistor a lot MORE likely. A loose wire to the RAMPS (from the thermistor) can cause this as well.
     
    #22 mark tomlinson, Apr 30, 2016
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  3. Thomas

    Thomas Member

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    [​IMG][​IMG][​IMG] the two thinner wires correct?


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    #23 Thomas, Apr 30, 2016
  4. Geof

    Geof Volunteer Moderator
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    Yes there is a set screw on the bottom of the block they screw into (heater block)
     
    #24 Geof, Apr 30, 2016
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  5. Geof

    Geof Volunteer Moderator
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    The cooling fan could be overpowering the heater as well. If i have the ceiling fan or ac on it would affect my stock heater.
     
    #25 Geof, Apr 30, 2016
  6. Geof

    Geof Volunteer Moderator
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    Also might be worth verifying the thermistor is well seated onto the ramp. Give all the connectors a good look, expecially the leds and lcd if its giving you fits
     
    #26 Geof, Apr 30, 2016
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  7. Thomas

    Thomas Member

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    Thanks guys


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    #27 Thomas, Apr 30, 2016
  8. KTMDirtFace

    KTMDirtFace Well-Known Member

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    My new stock R1+ the LED's have flickered since I got it. I just ignored it.

    As for temp drops, yep mine does that too. I found 50% cooling fan speed works. if I run it at 100% I get temp fall errors.
     
    #28 KTMDirtFace, May 1, 2016
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  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Larger heater core would help sort that or redirecting the parts fan so it doesn't hit the nozzle.

    If your prints are working -- don't worry about it :)
     
    #29 mark tomlinson, May 1, 2016
  10. Geof

    Geof Volunteer Moderator
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    I printed out fan ducts for my r1+ never had the issue again. 40 watt heaters are a good think to have on the parts shelf for sure
     
    #30 Geof, May 1, 2016
    Last edited: May 1, 2016
  11. Dustyn

    Dustyn New Member

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    The lights on my printer will flicker to the point where it will crash and stop the print but only when printing ABS. How can I get it to stop doing this. Will simply unplugging the lights work?
     
    #31 Dustyn, Dec 1, 2024
  12. Dustyn

    Dustyn New Member

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    What s a low pass filter
     
    #32 Dustyn, Dec 1, 2024
  13. Dustyn

    Dustyn New Member

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    And how do I get a low pass filter
     
    #33 Dustyn, Dec 1, 2024
  14. BrooklynBay

    BrooklynBay Moderator
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    They flicker because they are receiving power from the RAMPS board which is already over burdened with fans, bed heater, and the hotend. Run the LEDS, Arduino fan, and the hotend fan from the power supply, and not from the RAMPS. The parts fan is controlled by the RAMPS to switch on & off. Use solid state controllers on the bed, and the hotend heaters. They will be switched on & off from RAMPS. This will help prevent overheated RAMPS terminals, and you won't have to worry about flickering LEDS.
     
    #34 BrooklynBay, Dec 2, 2024
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