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Viewsonic VP201b

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    #1

    Viewsonic VP201b

    I replaced the capacitors on the power supply, but not the inverter board. Visually, they look OK. Before hooking up the power supply board, the ouput voltage measured a steady 17.9V.

    After hooking up the power supply board, I turned the switch on and the fuse on the power supply board blew. What can I do next? If I replace the fuse, I'm sure it will blow again. What does it mean that it blew? The voltage on the power cable seems fine at 117.2 VAC.
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    #2
    Re: Viewsonic VP201b

    There is going to be very little anyone can do for you without some good quality photos of your boards
    Please no inline pictures use managed attachments and get as close to the 2000x2000 pixel limit as possible use natural sunlight.
    It might be a good idea to check your soldering to make sure you did not bridge a power to a ground.
    Al.
    Whatever I do, I consider it a success, if in the end I am breathing, seeing, feeling and hearing!

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      #3
      Re: Viewsonic VP201b

      Originally posted by kwinana View Post
      I replaced the capacitors on the power supply, but not the inverter board. Visually, they look OK. Before hooking up the power supply board, the ouput voltage measured a steady 17.9V.

      After hooking up the power supply board, I turned the switch on and the fuse on the power supply board blew. What can I do next? If I replace the fuse, I'm sure it will blow again. What does it mean that it blew? The voltage on the power cable seems fine at 117.2 VAC.
      What was the original problem you were having? As Al says, you may have a short someplace.

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