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  1. #1
    3D Printer Noob
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    Sensor Error or Not Enough Power

    So, I just got "Sensor Error or Not Enough Power" on my last two prints and the heated bed is indeed not heating.

    The temp is reading the correct room temp so not sure it is a sensor error. How should I go about checking if there is "enough power" for the heat bed?

    Thanks,

    Mike

  2. #2
    Administrator bolsoncerrado's Avatar
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    Using a multimeter check the voltage on the screws for the HB IN and HB out screws they should read 12v when bed is on.

    Also LED on the MOFSET should be bright green. If pale, might be faulty or not enough voltage coming in.

    Also check for burnt out connectors (unplug the green ones and check burns throroughly, on ALL of them).

  3. Thanks refriedchicken thanked for this post
  4. #3
    3D Printer Legend
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    Quote Originally Posted by bolsoncerrado View Post
    ................Also check for burnt out connectors (unplug the green ones and check burns throroughly, on ALL of them).
    I agree, both times when my heated bed stopped working it was burnt out connectors and ultimately a damaged motherboard.

  5. #4
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    Must have been a loose connection. I checked voltage on the bed and there was no voltage, so I pulled the connector and looked at it. Not burning or anything. Plugged it back in and voila the bed is heating again.

    I did, however, notice that I am likely going to have a problem with the heat cartridge for the hotend. Looks like the wiring was cut short and instead of redoing it they just forced it into the board where it is sitting at an angle and putting a lot of strain on everything. I will be rewiring that once I get some free time.

  6. #5
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    If it is that loose, then it could burn in the future. Keep an eye on it...

  7. #6
    Administrator bolsoncerrado's Avatar
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    ^^^^^^what he said.

  8. #7
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    So it stopped working again yesterday after about 2 hours of running.

    Still wasn't working this morning, so pulled it apart and took the voltmeter to it and again it magically starts working. Check the solder joints on the back of the main board and they appear good.

    However the LED on the head bed is not working at all, even when the bed is actively heating. At this point I don't know what to do at this point to troubleshoot this issue any further.

    I have emailed Ethan, but since he hasn't responded to my last 3 emails I am not sure I will get a response on this either.

  9. #8
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    OK, just found the issue. The 6 pin connector on the cable from the bed to the to the cables on the board. The -12v crimps were loose. I don't have a way to fix the current connectors, but will be replacing them with what I have around the office here.

  10. #9
    Administrator bolsoncerrado's Avatar
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    Seems we keep "debugging" the Rapides more and more...

    Big bugs already identified so far

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