Help with AVD48 board

Discussion in 'Computers, Cabling & Other Miscellaneous Hardware' started by klanger, Dec 13, 2015.

  1. klanger

    klanger New Elf

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    So I hooked up the power last night, made smoke.
    Applied 36vdc,
     

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  2. David_AVD

    David_AVD Good news, everyone!

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    Never seen that before. If you post it to me we'll check it out for you.
     
  3. OP
    OP
    klanger

    klanger New Elf

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    Would like too, but need to run show, was thinking of bridging burnt out trace with some wire, and replace diode beside terminal block.
     
  4. lithgowlights

    lithgowlights Senior Elf

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    Looks like those Diodes are to protect for reverse polarity power connection? Could you have reversed the power connection at all?
     
  5. AAH

    AAH I love blinky lights :) Community Project Designer

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    In theory if you have power to both banks of the input power it won't matter that the track has been burnt out.
    2 things of concern though.
    -36V is right on the maximum 36V that the OKI78SR regulators can handle.
    -there are a couple of possible reasons that the track fused. The 1 I'd be most concerned about is the jumpers to select the input voltage. If that happened to have been in the 5V setting you may have damaged all sorts of things which could present a short circuit and potentially fused the track.
     
  6. David_AVD

    David_AVD Good news, everyone!

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    The regulator is not an OKI one. It's an LM2575, so not sure what has happened there.

    Good point about the jumpers. If they were set to 5V, the board will be somewhat toasted.
     
  7. OP
    OP
    klanger

    klanger New Elf

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    Jumpers set for 12-36v, left hand bank 1-24 had 31vdc, right hand bank 25-48 had 36vdc, pretty sure didn't have polarity wrong.
     
  8. David_AVD

    David_AVD Good news, everyone!

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    Send it in and we'll go from there. :)
     
  9. OP
    OP
    klanger

    klanger New Elf

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    Well thinking I'am smarter than I really am, desperately looking for a DMX BOARD min 48 channels, preferably dual voltage, 31 & 36


    Kevin
     
  10. David_AVD

    David_AVD Good news, everyone!

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    As per my PM, we don't have any ex-stock, but will be making a few more this week.

    Other than that, Alan (AAH) may be able to help with an M60 board?
     
  11. OP
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    klanger

    klanger New Elf

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    Ahh cool, thanks David
     
  12. AAH

    AAH I love blinky lights :) Community Project Designer

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    No mega60's in stock but I do have two DMX36
     
  13. David_AVD

    David_AVD Good news, everyone!

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    Just an update; we had Kevin's board repaired and back to him the next day.

    We do also have a couple of DC48 in stock if anyone needs them.
     

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