Duo2-PowerSupply-CapLeaks

Discussion in 'VuPlus Duo2 Hardware troubles and Repair support' started by bumperbee, Feb 14, 2021.

  1. bumperbee

    bumperbee Member

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    Hi Johnny & Everyone, I have a Vu+ Duo2 which could not start-up and the front white LED light will flicker continuously. I opened up the cover and found the capacitors in the power supply seem to be leaking, see attached photos.

    If I am buying the parts myself, please advise should I request for the followings or any other issue,

    1. Any particular better brand to look for?

    2. Does anyone have the spec for capacitors 1 & 3?


    Thanks & Best Regards

    how
     

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  2. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    Q1; I often take one of these brands if I want to use better quality caps.
    Rubycon
    Chemi-Con
    Nichicon
    Panasonic

    Q2: see here for a total overview of all the caps values, or only for the psu see this..
    vuplusduo2psu.jpg
     
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  3. bumperbee

    bumperbee Member

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    Hi Johnny, thank you for your quick reply and advices.

    I think the components that are spoiled are the following at the front right side of the pcb,

    1. 2 nos: 1500uF, 25v capacitors

    2. 1 no: Inductor L1, what is the specification or how can I ask the seller?

    Please tell me if there is any other component I need to change (attached photos)?

    Best Regards
     

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  4. Johnny B.

    Johnny B. Technical Support Staff Member Moderator

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    You basically only need to replace the 2x 1500uF, 25v capacitors,
    and as far as I see it on your pics it should be enough to let it work again.

    You can of course replace/refresh all the caps, with exception of the big 400 volt cap to make the psu more stable but it's just a choice of what you like to do.

    As for the L1, the inductor (which is a coil, and not a capacitor), it does not need to be replaced if it's not interrupted, and also that is rare when that's happened therefore I'm pretty sure it does not have to be replaced.

    Most of the brown stuff what you see is glue, used to prevent some oscillation noise sound from the caps.
     
  5. bumperbee

    bumperbee Member

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    Thank you very much Johnny B.

    Best Regards
     
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