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Partial Answer R1+ Bed Not Heating

Discussion in 'Troubleshooting' started by Erin-Ellen Winfree, Nov 2, 2018.

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  1. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If you disconnect the power wires you have landed on the RAMPS (all of them) -- do they read the correct voltage out of the power supply?
    That is an odd failure which is why I ask
     
    #41 mark tomlinson, Nov 15, 2018
  2. Erin-Ellen Winfree

    Erin-Ellen Winfree Member

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    I tested at the attachment screws and was actually getting 26 at first. I actually dialed the screw back a little.
     
    #42 Erin-Ellen Winfree, Nov 15, 2018
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    and you measured that with the RAMPS and arduino disconnected from the power supply?
    If so it is toast.

    Supposed to be a 12v supply, not a 24v
     
    #43 mark tomlinson, Nov 15, 2018
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If that is the case then it is what dynamited your regulator on the one Arduino board more likely than not
     
    #44 mark tomlinson, Nov 15, 2018
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  5. Erin-Ellen Winfree

    Erin-Ellen Winfree Member

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    See, that's the weird part. It is functional right now with the old arduino that has a broken voltage regulator. I can turn it on, connect it to the Octopi, and heat the bed and extruder. The only thing that doesn't function correctly is the LCD screen. A video I watched suggested that that is a symptom of the melted voltage regulator.

    So confused.
     
    #45 Erin-Ellen Winfree, Nov 15, 2018
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    never mind I see your problem
    You meter is set to A/C volts...
    Not DC Volts

    Fix that and read it again :)

    That would be the V with the SOLID lines next to it not the V with the ~ lines next to it :)
     
    #46 mark tomlinson, Nov 15, 2018
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Mind you 24v AC of ripple coming out of that unit is still bad.
    I'd be putting in a new P/S personally, but that is not what the boards are using they are using the DC output (although that much AC could still cause problems)
     
    #47 mark tomlinson, Nov 15, 2018
  8. Erin-Ellen Winfree

    Erin-Ellen Winfree Member

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    12.11v :)

    My bad, I have only watched one Youtube video on multimeter usage. In that case, I think I'm golden over this way. About to hook up what I sincerely hope is my final arduino for a bit and see what's what.
     
    #48 Erin-Ellen Winfree, Nov 15, 2018
  9. Erin-Ellen Winfree

    Erin-Ellen Winfree Member

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    What should the AC be saying? Should it also read 12?
     
    #49 Erin-Ellen Winfree, Nov 15, 2018
  10. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I'd still be disturbed at that much A/C on the D/C side, but heck... could be just a floating ground or something.
     
    #50 mark tomlinson, Nov 15, 2018
  11. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    The A/C should be close to Zero. It might read a few volts, but not more.
     
    #51 mark tomlinson, Nov 15, 2018
  12. Erin-Ellen Winfree

    Erin-Ellen Winfree Member

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    hmm, maybe the outlet isn't grounded?
     
    #52 Erin-Ellen Winfree, Nov 15, 2018
  13. Erin-Ellen Winfree

    Erin-Ellen Winfree Member

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    At any rate you have been unendingly helpful and I'll likely get a new power supply soon as well. I'll be testing another outlet first though.
     
    #53 Erin-Ellen Winfree, Nov 15, 2018
  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Sure, worth a shot although I'd not really suspect that to make the sort of difference you saw.
    Glad it is working again at least, but this might prevent another Arduino from losing bits :)
     
    #54 mark tomlinson, Nov 15, 2018
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