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    Need help replacing a power source component

    i cant seem to find any kind of datasheet or anything related to it besides PS2008L, and i cant find any datasheet for that either, help?
    can anyone suggest a replacement for this?
    Attached Files

    #2
    Re: Need help replacing a power source component

    It is SMPS IC.
    See PDF to see how it is connected in the circuit.
    Show us the straight shot pictures of the whole top and bottom side of the board will help.
    Attached Files
    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


      #3
      Re: Need help replacing a power source component

      Originally posted by Seshmaru View Post
      i cant seem to find any kind of datasheet or anything related to it besides PS2008L, and i cant find any datasheet for that either, help?
      can anyone suggest a replacement for this?

      Here is were you can find one

      https://www.utsource.net/ic-datashee...L-1724438.html

      Here is another place that has some

      https://www.ebay.com/itm/10PCS-PS200...YAAOSw3ihXS5Tn
      Last edited by sam_sam_sam; 12-07-2017, 09:29 PM.
      9 PC LCD Monitor
      6 LCD Flat Screen TV
      30 Desk Top Switching Power Supply
      10 Battery Charger Switching Power Supply for Power Tool
      6 18v Lithium Battery Power Boards for Tool Battery Packs
      1 XBox 360 Switching Power Supply and M Board
      25 Servo Drives 220/460 3 Phase
      6 De-soldering Station Switching Power Supply 1 Power Supply
      1 Dell Mother Board
      15 Computer Power Supply
      1 HP Printer Supply & Control Board * lighting finished it *


      These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

      1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
      2 Hem Saw Computer Stack Board

      All of these had CAPs POOF
      All of the mosfet that are taken out by bad caps

      Comment


        #4
        Re: Need help replacing a power source component

        Is "L" the same as the regular one?

        Also thank you so much for helping

        EDIT: It is a Samsung DVD-CM500 Power supply board that always blows fuses, so i need to try and replace components
        Last edited by Seshmaru; 12-08-2017, 02:00 AM.

        Comment


          #5
          Re: Need help replacing a power source component

          Please take a photo of the hole board front and back of the

          “ Power supply board that always blows fuse “

          Thanks
          Last edited by sam_sam_sam; 12-08-2017, 05:25 AM.
          9 PC LCD Monitor
          6 LCD Flat Screen TV
          30 Desk Top Switching Power Supply
          10 Battery Charger Switching Power Supply for Power Tool
          6 18v Lithium Battery Power Boards for Tool Battery Packs
          1 XBox 360 Switching Power Supply and M Board
          25 Servo Drives 220/460 3 Phase
          6 De-soldering Station Switching Power Supply 1 Power Supply
          1 Dell Mother Board
          15 Computer Power Supply
          1 HP Printer Supply & Control Board * lighting finished it *


          These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

          1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
          2 Hem Saw Computer Stack Board

          All of these had CAPs POOF
          All of the mosfet that are taken out by bad caps

          Comment


            #6
            Re: Need help replacing a power source component

            Originally posted by Seshmaru View Post
            Is "L" the same as the regular one
            There is no way of knowing I look for awhile for a date sheet for that chip
            For some reason the data sheet have been removed
            9 PC LCD Monitor
            6 LCD Flat Screen TV
            30 Desk Top Switching Power Supply
            10 Battery Charger Switching Power Supply for Power Tool
            6 18v Lithium Battery Power Boards for Tool Battery Packs
            1 XBox 360 Switching Power Supply and M Board
            25 Servo Drives 220/460 3 Phase
            6 De-soldering Station Switching Power Supply 1 Power Supply
            1 Dell Mother Board
            15 Computer Power Supply
            1 HP Printer Supply & Control Board * lighting finished it *


            These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

            1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
            2 Hem Saw Computer Stack Board

            All of these had CAPs POOF
            All of the mosfet that are taken out by bad caps

            Comment


              #7
              Re: Need help replacing a power source component

              Since I provide the circuit that show as how each pin is connected and used, then you just have to do some resistance testing of the power MOSFET that is driven by this SMPS IC.
              I cannot help much until I get to see the good clear pictures of the whole top and bottom side of the board and also the pictures of the whole unit.
              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


                #8
                Re: Need help replacing a power source component

                sorry for the late, response. I've tried to replace the three legged transistor, it worked for a bit with lots of noise until an awesome explosion went by the 6.5A fuse

                here are some images as you wanted

                EDIT: as you see near the blue cap, it looks like something has been burnt, but it does not look like it has any cracks
                Attached Files
                Last edited by Seshmaru; 12-15-2017, 09:18 AM.

                Comment


                  #9
                  Re: Need help replacing a power source component

                  Those two small blue disk caps and the resistors looks to be the R/C Snubber circuit for those two rectifier diodes that are mounted on the heatsinks.
                  You need to remove the blue to see if it is shorted or has leakage resistance or not, also check the resistance of those white rectangular resistor (5.10 Ohms 5W) and the rectifier diodes too.
                  So was the old MOSFET bad?
                  Last edited by budm; 12-15-2017, 11:18 AM.
                  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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