No Picture Samsung LED TV

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  • vinceroger69
    Badcaps Legend
    • Mar 2012
    • 6714
    • uk

    #41
    Re: No Picture Samsung LED TV

    Originally posted by budm
    Post 36
    https://www.badcaps.net/forum/showth...645#post718645
    It is impossible to have fuse with 0 Ohms reading and have 12.85VDC on one end and 6.5V on the other end of the fuse. So Basically you have 6.35 DCV drops on 0 Ohm! Got to be measurement error.
    What scale are you using in Ohm mode?
    i never thought of it that way budm so must be a error in measurements as if tcon/panel was loading the 12v supply down it would be the same both sides of the fuse

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #42
      Re: No Picture Samsung LED TV

      That much Voltage drop between the two legs of the fuse means the fuse has quite a resistance to it. Current flows through 0 Ohms have no Voltage drops on 0 Ohms.
      Basically the Voltage should the same on both ends of the fuse.
      If he uses Ohm meter in K Ohm range or higher then the meter will not have the resolution to show low resistance. Try measuring 10 Ohms resistor on K or M Ohm scale and see what you have.
      When you have resistance in the path of the current flow you will have Voltage drops on that resistance.
      Last edited by budm; 01-19-2017, 01:12 PM.
      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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