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Heat bed will not heat

Discussion in 'Troubleshooting' started by Kevin, May 20, 2014.

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  1. Kevin

    Kevin Member

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    I started a print yesterday, everything went great until laptop battery died. This has happened to me before. This time, after starting again the bed temp would not go up even after 20 minutes. I shut everything off for the rest of the day. This morning still can not get the bed to go up in temp. The printers lights are on just like before, nothing seems to be different. Can anyone help?
     
  2. Mike Kelly

    Mike Kelly Volunteer

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    Can you measure the voltage coming off of D8?
     
  3. Kevin

    Kevin Member

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    Yes, I will get my meter.
     
  4. Kevin

    Kevin Member

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    I have 12.24 volts.
     
  5. Mike Kelly

    Mike Kelly Volunteer

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    ok now measure the resistance of the heat bed.

    Also verify the thermistor is pressing against the kapton heater.
     
  6. Kevin

    Kevin Member

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    Now I don't have any power to the board.
     
  7. Kevin

    Kevin Member

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    The white wire has gotten hot and melted the plastic end of the plug into heat bed. The plug on the bed is ok.
     
  8. Mike Kelly

    Mike Kelly Volunteer

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    Sounds like that's your problem then.
     
  9. Kevin

    Kevin Member

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    The resistance in the bed was good.
     
  10. Mike Kelly

    Mike Kelly Volunteer

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    Around 1.5ohms?
     
  11. Kevin

    Kevin Member

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    I still dont have power to the board?
     
  12. Kevin

    Kevin Member

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    1.2ohms
     
  13. Mike Kelly

    Mike Kelly Volunteer

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    Can you take a picture of how it melted? Would you chat with me over skype? would help with communication: redacted
     
  14. Kevin

    Kevin Member

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    I will but you may have to walk me thru it. I have never used it before.
     
  15. Mike Kelly

    Mike Kelly Volunteer

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    it's just a chat messenger. it's like this but without me replying to the forum.
     
  16. Kevin

    Kevin Member

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    Let me know if this pic is good enough. If not I will take another one.
     

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  17. Mike Kelly

    Mike Kelly Volunteer

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  18. Kevin

    Kevin Member

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    Did you get the message over skype?
     
  19. Mike Kelly

    Mike Kelly Volunteer

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    nope you need to send me a contact request first
     
  20. Kevin

    Kevin Member

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    I sent it, If that doesn't work, I am still havng issues with no power.
     
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