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Thread: DC input wrong polarity HELP

  1. #1
    Join Date
    Dec 2008
    Bairnsdale, Victoria , Australia
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    Default DC input wrong polarity HELP

    I accidently plugged 28vdc incorrectly into some SSRDC boards.
    Now they dont work guessing I blew something on the board, as I dont have time right now to diagnose fully has anyone got any idea what would have gone pop ?

    Yes Im being lazy I know but still have a tonne of display items to get up
    2012 Plans
    1 J1Sys ECG-P12R Controller and 2 ECG-P2 Controllers
    1 [URL=""]Pixel Megatree[/URL] (Finished)
    3 Pixel Arches replacing my 2011 clear arches (cant decide on design)
    20 x [URL=""]3D Mini Trees[/URL]
    40 x [URL=""]Mini Roof Stars[/URL] (Finished)
    [URL=""]Columns[/URL] (Qty to be decided)
    Pixels Pixels Pixels

    [URL=""]3 x RGB arches[/URL]
    6 x [URL=""]RGB Window Display Trees[/URL]
    2 x [URL=""]RGB Window Display Bells[/URL]
    6 x [URL=""]RGb Window stars[/URL]
    5 X [URL=""]Mini arches RGB[/URL]
    [URL=""]1 x RGB Bethlehem Star[/URL]
    14metres of [URL=""]Eave Lights[/URL]

  2. #2
    Join Date
    Sep 2008
    Baulkham Hills, NSW
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    Default Re: DC input wrong polarity HELP

    Mostly likely the voltage regulator, possible the FETS and the OPTO.

    When you connect the 28v the correctly, is there 5V on Pin16 of the OPTO? use the neg (pin2) of TB0 as your reference.

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