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Phillips 42PF7521D - Just Green LED - wont power up

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    Phillips 42PF7521D - Just Green LED - wont power up

    Hi All

    been a while but just got a Phillips 42PF7521D

    owner said it just wouldn't power on one day

    looked inside no obvious caps on PS but did find one on the zsus - c5040 100uf 50v

    replaced that but still the same issue

    when you plug it in you get the 2 clicks and LED's on PS light up then 4 seconds later as the main board LED's are flashing it shuts down

    then i get 3 flashes on the sub board on the top left of the PS pic

    its strange though as the LED on the front just stays green the whole time as if its on no red LED at all

    If i isolate the zsus the PS stays up, my question is does that mean its a zsus fault or when it trys to pull power thats when the PS fails ?

    there are 2 other caps on the zsus that look suspect but i will have to raid the spares bin as i dont have any 68uf 63v
    Attached Files

    #2
    Re: Phillips 42PF7521D - Just Green LED - wont power up

    Did you test all the voltages out of the power supply - is fuse 5607 good?
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

    Comment


      #3
      Re: Phillips 42PF7521D - Just Green LED - wont power up

      Fuese on the zsus is good and all voltages are as expected until shutdown

      Comment


        #4
        Re: Phillips 42PF7521D - Just Green LED - wont power up

        Originally posted by noledud View Post
        Fuese on the zsus is good and all voltages are as expected until shutdown
        I dont know which board 5607 is on - your pictures are not labeled - but it is in picture 2. If it is on the power supply and all voltages are good then fuse must be ok.
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment


          #5
          Re: Phillips 42PF7521D - Just Green LED - wont power up

          ah thats on the zsus i only checked the normal fuse thats not in the picture

          i will check that and come back thanks for the heads up

          Comment


            #6
            Re: Phillips 42PF7521D - Just Green LED - wont power up

            Do you have Vs and Va?
            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


              #7
              Re: Phillips 42PF7521D - Just Green LED - wont power up

              fuse on ysus ok

              when powered with ysus i dont get a stable reading its dropping off

              when ysus is isolated the PS gives me

              Vs - 212
              va - 85.9

              label reads VS 205 Ve 84

              Comment


                #8
                Re: Phillips 42PF7521D - Just Green LED - wont power up

                iv dropped the VS to 206 and its still the same, got some more tvs coming today so not got the room tempted just to part it out

                Comment

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