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Sanyo DP42828

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    #1

    Sanyo DP42828

    This 42" Sanyo is giving me some shit. Has the 2S2B problem. I can't seem to find anything wrong with it or am looking in the wrong place. I need to figure out this ESR meter also, Can I test ESR while the Cap is still on the board or do I need to remove a leg?.

    Thanks

    Here are the boards, Any suggestions would be nice









    Attached Files
    ^Learning to walk on rice paper without leaving a trace,
    Tags: None
    #2
    Re: Sanyo DP42828

    Not sure if it means anything but when I unplug the right inverter and push the power button nothing happens

    With the right plugged in I get 2 s 2 b
    ^Learning to walk on rice paper without leaving a trace,

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      #3
      Re: Sanyo DP42828

      I just noticed one of the 2 transformers has a burn mark on the side. So I will try to hunt one down.

      Looks like I'm ordering a ring tester this week
      ^Learning to walk on rice paper without leaving a trace,

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        #4
        Re: Sanyo DP42828

        get the "blue esr kit"
        btw i have seen several of those transformers go bad.
        http://www.lcdparts.net/Transformer3D.aspx

        Comment

          #5
          Re: Sanyo DP42828

          nice site, I already have the blue esr meter, just need to figure out how to use it correctly. I'm ordering the Ring Tester
          ^Learning to walk on rice paper without leaving a trace,

          Comment

            #6
            Re: Sanyo DP42828

            Originally posted by Nama
            This 42" Sanyo is giving me some shit. Has the 2S2B problem. I can't seem to find anything wrong with it or am looking in the wrong place. I need to figure out this ESR meter also, Can I test ESR while the Cap is still on the board or do I need to remove a leg?.

            Thanks

            Here are the boards, Any suggestions would be nice
            You can check the ESR of a cap while it is still in the board. However, it is important that you pay attention to the circuit connections. Many power supplies use several identical capacitors in parallel. If you are measuring one of those caps, you are actually measuring the aggregate ESR. For example, you are measuring a capacitor with an ESR rating of .2 ohms; you read .1 and conclude it is good. However, it is in parallel with three others. A set of four good capacitors in parallel should read less than .05 ohms, so at least two of these capacitors have a high ESR. The good news - this is rare. And on monitor power supplies it is easy to see if multiple capacitors are parallel.

            PlainBill
            For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

            Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

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              #7
              Re: Sanyo DP42828

              i meant the blue ringer. duhhhhh!!!
              get the kit and assemble it yourself.

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