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IPOS-150 power supply could use help almost there i think

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    IPOS-150 power supply could use help almost there i think

    This is from poloroid tv tda-03211c

    boy am i lost here... what i did, spent 3 hours reading every post about this IPOS 150 power supply can't get it going..I gotta be close

    1) power up tv ...red led not lit on ps board or front of tv..really dead
    2)press power on tv....still dead
    3)check ps volts on com3...see below
    4)check f1 and f2 =good
    5)re-solder all old conections and parts
    6)checked D10 and D2
    7)changed alll capasitors
    8)used 2 AA batteries in series to give STB 3V ...I read that someplace. dead..still
    9)bridge is good ot 5volts
    10)got 7 large transisters or voltage regulators...not sure how to test
    11)voltage across main cap is 167v with com3 un-plugged .....plugged in its 320v

    only thing the 2 large capasitors are 47uf 450v should be 10uf 450v...someone changed them...would that matter? part of the backlight stage?

    STB =0
    5VSB =5V
    5V =0
    20V =0

    do have 5Volts dc... somethings alive...

    got some pics of the board
    I hate to buy a board...thats cheating and no fun

    Thanks for any help david
    Attached Files
    Last edited by davewilson61; 01-22-2013, 06:56 PM.

    #2
    Re: IPOS-150 power supply could use help almost there i think

    No longer relevant.
    Last edited by gilly1984; 01-22-2013, 06:51 PM.
    Do NOT touch heatsinks when testing for voltages as they may be LIVE!

    Comment


      #3
      Re: IPOS-150 power supply could use help almost there i think

      sorry missed the "0"...long day

      Comment


        #4
        Re: IPOS-150 power supply could use help almost there i think

        Ah its 10uf 450v. Not sure if it would matter, someone will let you know soon pal.
        Do NOT touch heatsinks when testing for voltages as they may be LIVE!

        Comment


          #5
          Re: IPOS-150 power supply could use help almost there i think

          Also, that main filter cap on mine was 450v, unless thats because I am in the UK.
          Do NOT touch heatsinks when testing for voltages as they may be LIVE!

          Comment


            #6
            Re: IPOS-150 power supply could use help almost there i think

            thanks

            Comment


              #7
              Re: IPOS-150 power supply could use help almost there i think

              Have you tried the sometimes overlooked simple things?

              Power switch working?

              Tried with remote?

              Sorry I am not much help, Big boys will be here soon
              Do NOT touch heatsinks when testing for voltages as they may be LIVE!

              Comment


                #8
                Re: IPOS-150 power supply could use help almost there i think

                voltage across main cap is 167v without com3 un-plugged .....plugged in its 320v

                Comment


                  #9
                  Re: IPOS-150 power supply could use help almost there i think

                  guess what...its up...small white connector to power switch was unpluged...couldnt see it ......thanks gilly1984...it was over looked....simply things...cost 3 days of brain pain....but still would think the red led would light on the ps board...guess not or its out

                  thanks again

                  Comment


                    #10
                    Re: IPOS-150 power supply could use help almost there i think

                    The led on the psu is for fault codes. If there are no faults it will not come on.
                    Do NOT touch heatsinks when testing for voltages as they may be LIVE!

                    Comment


                      #11
                      Re: IPOS-150 power supply could use help almost there i think

                      beer and pizza for you.....lol...and i dont have to stay up till 3am trying to fix this anymore

                      Comment


                        #12
                        Re: IPOS-150 power supply could use help almost there i think

                        Get on CL and join us some more
                        Do NOT touch heatsinks when testing for voltages as they may be LIVE!

                        Comment

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