LCD TV won't turn on. LED keeps blinking

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  • sahan14
    Senior Member
    • Oct 2016
    • 52
    • sri lanka

    #21
    Re: LCD TV won't turn on. LED keeps blinking

    underside
    Attached Files

    Comment

    • vinceroger69
      Badcaps Legend
      • Mar 2012
      • 6714
      • uk

      #22
      Re: LCD TV won't turn on. LED keeps blinking

      Also as mentioned some clear pictures of the white connectors on the top side of the board so we can see/read the writing by them

      Comment

      • sahan14
        Senior Member
        • Oct 2016
        • 52
        • sri lanka

        #23
        Re: LCD TV won't turn on. LED keeps blinking

        underside ...
        Attached Files

        Comment

        • sahan14
          Senior Member
          • Oct 2016
          • 52
          • sri lanka

          #24
          Re: LCD TV won't turn on. LED keeps blinking

          is this clear enough?

          Comment

          • dick_barton
            Badcaps Legend
            • Aug 2015
            • 6642
            • Wales

            #25
            Re: LCD TV won't turn on. LED keeps blinking

            What are the part numbers on the top of the IC's
            Attached Files
            Willing to help but I'm no expert.

            Comment

            • sahan14
              Senior Member
              • Oct 2016
              • 52
              • sri lanka

              #26
              Re: LCD TV won't turn on. LED keeps blinking

              big one B249733
              Attached Files
              Last edited by sahan14; 10-12-2016, 04:23 PM.

              Comment

              • sahan14
                Senior Member
                • Oct 2016
                • 52
                • sri lanka

                #27
                Re: LCD TV won't turn on. LED keeps blinking

                new pictures
                Attached Files

                Comment

                • sahan14
                  Senior Member
                  • Oct 2016
                  • 52
                  • sri lanka

                  #28
                  Re: LCD TV won't turn on. LED keeps blinking

                  pictures
                  Attached Files

                  Comment

                  • vinceroger69
                    Badcaps Legend
                    • Mar 2012
                    • 6714
                    • uk

                    #29
                    Re: LCD TV won't turn on. LED keeps blinking

                    let us know when you have your new fuse also it maybe worth you building a dim bulb tester to test your psu for shorts as it saves blowing new fuses and more parts i have attached a picture of basic one that easy to build with parts you may have already
                    Attached Files

                    Comment

                    • sahan14
                      Senior Member
                      • Oct 2016
                      • 52
                      • sri lanka

                      #30
                      Re: LCD TV won't turn on. LED keeps blinking

                      do i have to build this tester?

                      Comment

                      • vinceroger69
                        Badcaps Legend
                        • Mar 2012
                        • 6714
                        • uk

                        #31
                        Re: LCD TV won't turn on. LED keeps blinking

                        its up to you if you fit a new fuse and you still have a short theres a chance you will blow the new fuse plus extra parts using this tester if you have a short when you plug the tv in the bulb lights bright so indicates a short if bulb goes dim its usually ok too power up etc so up too you if you build one a lot of us on this site probably use one a lot too save newly fitted parts.

                        Comment

                        • sahan14
                          Senior Member
                          • Oct 2016
                          • 52
                          • sri lanka

                          #32
                          Re: LCD TV won't turn on. LED keeps blinking

                          ok i will build it

                          Comment

                          • sahan14
                            Senior Member
                            • Oct 2016
                            • 52
                            • sri lanka

                            #33
                            Re: LCD TV won't turn on. LED keeps blinking

                            with the bulb tester i turn on the tv.
                            once bulb lights and within in a second it turns off
                            after discharging the 450v cap it lights up for another second,
                            board is not in the tv

                            Comment

                            • sahan14
                              Senior Member
                              • Oct 2016
                              • 52
                              • sri lanka

                              #34
                              Re: LCD TV won't turn on. LED keeps blinking

                              After i replacing the fuse what should i do?

                              Comment

                              • vinceroger69
                                Badcaps Legend
                                • Mar 2012
                                • 6714
                                • uk

                                #35
                                Re: LCD TV won't turn on. LED keeps blinking

                                what watt bulb are you using? i use a 60 watt i think without looking.

                                Comment

                                • sahan14
                                  Senior Member
                                  • Oct 2016
                                  • 52
                                  • sri lanka

                                  #36
                                  Re: LCD TV won't turn on. LED keeps blinking

                                  15watt

                                  Comment

                                  • sahan14
                                    Senior Member
                                    • Oct 2016
                                    • 52
                                    • sri lanka

                                    #37
                                    Re: LCD TV won't turn on. LED keeps blinking

                                    how should i test the psu is ok or not?

                                    Comment

                                    • vinceroger69
                                      Badcaps Legend
                                      • Mar 2012
                                      • 6714
                                      • uk

                                      #38
                                      Re: LCD TV won't turn on. LED keeps blinking

                                      im not sure if using a low watt bulb will matter have you got a 60w or a 100w bulb you can use?

                                      Comment

                                      • sahan14
                                        Senior Member
                                        • Oct 2016
                                        • 52
                                        • sri lanka

                                        #39
                                        Re: LCD TV won't turn on. LED keeps blinking

                                        Now im sure there is no short on the board.. the bulb is ok

                                        Comment

                                        • vinceroger69
                                          Badcaps Legend
                                          • Mar 2012
                                          • 6714
                                          • uk

                                          #40
                                          Re: LCD TV won't turn on. LED keeps blinking

                                          so you have fitted the new correct fuse to the psu then used the dim bulb tester and buld flashed and went off? if thats the case we can start testing voltages again we need to see why the boosted voltage is not there i have found a data sheet for the larger ic but cant seem to find one for the 230d6 ic
                                          Attached Files
                                          Last edited by vinceroger69; 10-13-2016, 07:26 AM.

                                          Comment

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