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250V AC Capacitor across input

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    #21
    Re: 250V AC Capacitor across input

    Originally posted by budm View Post
    So basically the diagram was wrong? What does the correct diagram look like?
    No No.... the first image I posted was the image from the manual... I photoshopped the second image to represent the circuit as it was after I jumped out the switch / fuse / cap / inrush limiter... I thought it might help people to understand / visualize the changes I'd made, but obviously it didnt work.

    This is the original schematic, to which I have marked in red the section of wire that was open..



    It is still working today, so I think we're good.. Thanks to everybody who helped... A lot of useful information..

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      #22
      Re: 250V AC Capacitor across input

      So it is working with the switch bypassed? If that wire is open, you still should have 230V across the Cap.
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

      Comment


        #23
        Re: 250V AC Capacitor across input

        Originally posted by budm View Post
        So it is working with the switch bypassed? If that wire is open, you still should have 230V across the Cap.
        After I put the new wire between TL1 and F2 (marked in the schema above), it worked immediately. I reintroduced all of the original components into the circuit and it is still working.. i.e. the circuit now is the same as the schema in my original post with just the wire between TL1 and F2 replaced..

        Comment


          #24
          Re: 250V AC Capacitor across input

          That does not explain why you were only getting 30V since you have the cap which is in series with the resistor (10 Ohms thermistor) and connected across the line, then the step down transformer, and then the lamp circuits which are also across the line. So basically you have 3 circuits across the line, you can remove any one of them by opening up the wire you then still should have 230v across the other 2 circuits. The voltage reading was not logical at all.
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment

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