Samsung TV won't turn on. No standby light

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  • ozbing
    New Member
    • Sep 2013
    • 6
    • Australia
    #1

    Samsung TV won't turn on. No standby light

    Hi, I have Samsung LA26B450 TV that won't turn on at all. There is no standby light. I have checked with the power cable to see if its firmly in place but still no power. I have opened the TV and the capacitors all seem fine. Not sure if it can be easy fix. If not, I am happy to replace the whole power supply board with a brand new one but before buying a new one I want to know if its definitely the power supply thats faulty. Can someone tell me if it could be caps or diodes thats could be bad? I checked the diodes with DMM in circuit and all seems fine though. Don't know how to test the caps. I had bought this TV brand new four years ago and have rarely used it recently. All of sudden it wouldn't turn on at all. Can someone help please? I have included the photos.

    EDIT: I have also checked the fuses and there are continuity in both fuses.

    Thanks
    Attached Files
    Last edited by ozbing; 09-25-2013, 09:08 AM.
    Tags: None
    • capkid
      Badcaps Legend
      • Oct 2010
      • 1339
      • United States
      #2
      Re: Samsung TV won't turn on. No standby light

      It looks like a PSU issue to me. I found this service tip: http://www.toms-service-manuals.com/...&Search=Submit. I'm not sure if it will correct your problem.
      Last edited by capkid; 09-25-2013, 07:28 PM.
      LG Plasma Mal-Discharge Correction Service

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        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: Samsung TV won't turn on. No standby light

          What DC voltage do you get at the main filter (the large one laying side way) cap? measure it right at the two legs of 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

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