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Answered LOR CMB16 controller dim channel

Discussion in 'LOR General Discussion' started by videoman3857, Nov 6, 2017.

  1. videoman3857

    videoman3857 Full Time Elf

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    I have a dim channel on my board. The out put should be 27 volts, but it is 24.
    Am I correct in assuming that it's the optocoupler (?) You know - that 3 legged component that runs along the edge of the board and it needs to be replaced ?
     
  2. David_AVD

    David_AVD Bite my shiny metal ass!

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    The 3 legged device is the MOSFET. It's usually what goes bad after a channel has had a short (even briefly) on it.
     
  3. OP
    OP
    videoman3857

    videoman3857 Full Time Elf

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    Thanks for the correct terminology David.
    So I have really have nothing to loose by replacing it.
    I will either fix it, or it wont work at all if I muck it up.
    Any suggestions on the soldering iron temp to perform this operation ?
     
  4. David_AVD

    David_AVD Bite my shiny metal ass!

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    I usually use 375C (about 700F) when soldering.
     
  5. OP
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    videoman3857

    videoman3857 Full Time Elf

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    Thank you. I was concerned I'd be too hot.
    I have been running 420 for my 4mm wire joins and probably would have run with that.
    Don't want to remove that printed circuit off the board.
     

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