Samsung LN32B650T1FXZA does not power on

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  • scalde
    New Member
    • Aug 2013
    • 5
    • usa

    #1

    Samsung LN32B650T1FXZA does not power on

    Hello, have a few questions. I have the follwing tv and it does not power on. the power on led on the front flashes but not in a patern. i did a quick diagnostics I opened up back cover to inspect caps on power module and they all look good. when I disconect white ribbon cable to main board the backlight on the set turns on. I pluged it back in backlight goes off. i went further and and disconected ribbon cable going to the t-con board. backlight goes back on and now I have the sound (Samsung Chime) from power up, still have front power led flashing on and off ramdomly and no picture. question is where do i start trouble shooting or whats the most common isue with this set. I also would like to find a service manual for it.. any one help me out... Thanks..

    quick note. as i was doing a visual inspection i found I had one of the inductors (L1501) casing broken. I followed the trace and it goes to audio out speakers. dont think this could be the cause but i would like to replace it any one familiar it i would like a part number..


    Thanks


    Sal
  • capkid
    Badcaps Legend
    • Oct 2010
    • 1339
    • United States

    #2
    Re: Samsung LN32B650T1FXZA does not power on

    Can you post pics of the board layout? Off hand, it sounds like a bad t-con or main board (main board seems more likely). Check your t-con fuse.
    Last edited by capkid; 08-21-2013, 03:45 PM.
    LG Plasma Mal-Discharge Correction Service

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    • scalde
      New Member
      • Aug 2013
      • 5
      • usa

      #3
      Re: Samsung LN32B650T1FXZA does not power on

      ok here you go, I included a picture to show the inductor thats damaged. where is the fuse to the tcon board?
      Attached Files

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      • capkid
        Badcaps Legend
        • Oct 2010
        • 1339
        • United States

        #4
        Re: Samsung LN32B650T1FXZA does not power on

        Here's the fuse.

        That inductor doesn't look good. I may have misunderstood your problem statement and tests. Did you try connecting the main board to the power supply and disconnecting the t-con from the main board when you got the chime and a backlight?
        Attached Files
        Last edited by capkid; 08-21-2013, 05:19 PM.
        LG Plasma Mal-Discharge Correction Service

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        • scalde
          New Member
          • Aug 2013
          • 5
          • usa

          #5
          Re: Samsung LN32B650T1FXZA does not power on

          yes sure did..

          PS + Main Board + tcon = no picture no sound

          PS + Main Board = backlight plus startup sound

          Comment

          • capkid
            Badcaps Legend
            • Oct 2010
            • 1339
            • United States

            #6
            Re: Samsung LN32B650T1FXZA does not power on

            Does your t-con fuse check out?
            LG Plasma Mal-Discharge Correction Service

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            • scalde
              New Member
              • Aug 2013
              • 5
              • usa

              #7
              Re: Samsung LN32B650T1FXZA does not power on

              yes fuse is good, any test points that I could check? also any idea on manufacture of inductor, its 15uh but thats all that i know. i would love to get get part list and order that inductor. if anyone has a schematic that will help me alot
              thanks for your help

              Comment

              • capkid
                Badcaps Legend
                • Oct 2010
                • 1339
                • United States

                #8
                Re: Samsung LN32B650T1FXZA does not power on

                I tried to search for your model num in Tom's database, but I couldn't find any service manuals by that model num. Here's the closest I could find: http://www.toms-service-manuals.com/...&Search=Submit

                The parts list for the LN32B530 shows L9001 on the main board as 15uH. I'm not sure if this is the same part. Someone else can suggest a good replacement. The inductor has the following info:

                Code No: 2704-000018
                Description and Spec: INDUCTOR-SMD-ARRAY;15uH,2000mA,2,0.124oh
                Last edited by capkid; 08-21-2013, 09:05 PM.
                LG Plasma Mal-Discharge Correction Service

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                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK

                  #9
                  Re: Samsung LN32B650T1FXZA does not power on

                  I've had shorted t-cons on these stop the TV from powering up. However, it's a good idea to isolate the panel as well, in case a short on the panel is causing the problem.
                  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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