Pioneer VSX-40 shut down after a few seconds

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  • withalligators
    Badcaps Veteran
    • Jun 2013
    • 267
    • USA
    #1

    Pioneer VSX-40 shut down after a few seconds

    Hey folks,
    This is the first receiver I'm attempting to fix. It is another e-waste bin rescue. After plugging in, it powers off after a few seconds and smells slightly of burnt electrical components. I imagine this is a protection mode. It isn't hooked up to any speakers or anything. Any idea where I should start looking? What is the general methodology to repairing a receiver in protection mode?

    Cheers,
    Alex
    Tags: None
    • tibimakai
      Badcaps Legend
      • Jan 2012
      • 3680
      • USA
      #2
      Re: Pioneer VSX-40 shut down after a few seconds

      I would start by measuring the final transistors on the big heatsink, I would look for a short.

        Comment

        • particleman
          Member
          • Mar 2014
          • 28
          • USA
          #3
          Re: Pioneer VSX-40 shut down after a few seconds

          I would start with a service manual.

            Comment

            • withalligators
              Badcaps Veteran
              • Jun 2013
              • 267
              • USA
              #4
              Re: Pioneer VSX-40 shut down after a few seconds

              Couldn't find an SM. I thought I found on on elektrotanya, but after downloading it, it was for a different model.

              I'll see if I can find anything on the big heatsink.

              Thanks,
              Alex

                Comment

                • tibimakai
                  Badcaps Legend
                  • Jan 2012
                  • 3680
                  • USA
                  #5
                  Re: Pioneer VSX-40 shut down after a few seconds

                  Maybe, you can use a similar model's SM.

                    Comment

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