Samsung LN40B610A5F blows fuse

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  • TheWill
    New Member
    • Jan 2013
    • 3
    • USA
    #1

    Samsung LN40B610A5F blows fuse

    Turned the TV on one morning and it immediately turned off, no red light or anything.

    Took the back off and replaced the blown fuse hoping it was just a power surge or something, although its on a surge protector.

    Blew the fuse immediately, again.


    No obvious blown caps.

    I checked the bridge rectifier and it seems good. [ .468 to .481 ]

    Not sure but I think I have to pull the mosfets out of circuit to test?


    Thanks for any advice
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    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: Samsung LN40B610A5F blows fuse

      Your prime suspects are shorted bridge rectifier, mosets and/or diodes.

      I test everything in circuit first and if I get any suspicious readings, then I desolder and verify out of circuit.
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        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK
          #3
          Re: Samsung LN40B610A5F blows fuse

          Can we get a picture of the bottom of the board?
          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

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