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Samsung LE32R88BD PS issue

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    Samsung LE32R88BD PS issue

    So picked this up for the shear hell of it, has a smashed screen so not much use other than for parts.

    Removed the rear cover, quick visual inspection and basic tests found an O.C fuse on the PS b/d, replaced 6.3A 240V fuse and disconnected the panel tabs to T-Con b/d, powered on and nothing at all.

    Removed PS b/d and found a nasty little surprise, Mosfet obviously shorted to chassis blowing the fuse, scorch mark directly below Mosfet 20N60S.
    On testing with it in-circuit, neg probe to Source and pos probe to Gate get 1.5 on diode test setting, then move pos probe to Drain and its reading infinite, so is this part completely knackered? Is anything else likely to have gone with it or even caused it?

    PS b/d: BN44-00155A
    Main A/V b/d: BN41-00813D-MP1.0
    T-Con b/d: V315B1-C01
    Inverter: L315B1-16A (CMO)
    Panel: V315B1-L01 Rev C3 (CMO-Chi Mie)
    Attached Files
    Last edited by notallbad; 10-15-2013, 06:13 AM.

    #2
    Re: Samsung LE32R88BD PS issue

    Having dismantled the panel I have discovered that not only is the screen smashed but also some of the lamps are broken(shattered).

    Perhaps should have also mentioned that there were no voltages on the output pins on either of the connectors.

    Would be nice to get this working ready for spares.

    Powered up with new fuse and get around 320v across the main cap, fuse not blown this time.
    Last edited by notallbad; 10-15-2013, 09:13 AM.

    Comment


      #3
      Re: Samsung LE32R88BD PS issue

      Do you get 5.3V from power board in standby?

      SCH:
      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


        #4
        Re: Samsung LE32R88BD PS issue

        Nope, nothing at all.

        Are you close to LU3? I know your sometimes in Cambridge.
        Someone has 2 faulty tv's but want money. Too far for me.

        Comment


          #5
          Re: Samsung LE32R88BD PS issue

          I'm never any where near Cambridge? I am in LS4 Leeds or RG26 Tadley depending on whether I'm away at uni or home.
          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


            #6
            Re: Samsung LE32R88BD PS issue

            Sorry, must have you confused with someone else. Apologies.

            Comment


              #7
              Re: Samsung LE32R88BD PS issue

              Anyone else nearby Luton that may be interested?
              P.S. Its not me selling these, I'm just too far away so someone may as well benefit.

              Comment


                #8
                Re: Samsung LE32R88BD PS issue

                Found FB802S O.C. 2A 250V

                Comment


                  #9
                  Re: Samsung LE32R88BD PS issue

                  What type of fuse is this? thermal

                  Comment


                    #10
                    Re: Samsung LE32R88BD PS issue

                    Just a time delay axial type e.g.
                    http://www.ebay.co.uk/itm/MCMET-2A-2...item53fab54f7d
                    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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