17pw26-4

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  • charlierfc
    Senior Member
    • Mar 2013
    • 93
    • scotland

    #1

    17pw26-4

    hi guys, i fixed this tv a while ago by replacing the bad capacitors.
    now tv wont fire backlight. though tv does turn on the back light is off

    i tested the backlight volts....its measuring 53 volts from psu?!

    after taking cover off inverter i saw one of the fuses was blown

    what would be causing the high volts to the inverter?

    ic? sorry, im very much a novice!

    any pointers would be appreciated.
  • ReeceyBurger123
    Never Give Up !
    • May 2014
    • 7325
    • Britain

    #2
    Re: 17pw26-4

    Unhook the inverter and mainboard, plug the Tv in the Psu starts all voltage rails check the 24v output see if its persistent first I had one where the inverter done some damage to the Psu due to shorting the 24v rail. Also make sure you have a good chassis ground and measuring in DCV !

    Also can you upload images of the Tv please ?
    Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

    https://www.facebook.com/Telford-Tel...7894576335359/

    Comment

    • charlierfc
      Senior Member
      • Mar 2013
      • 93
      • scotland

      #3
      Re: 17pw26-4

      still the same volts with boards unplugged
      ill up load some pics now

      Comment

      • ReeceyBurger123
        Never Give Up !
        • May 2014
        • 7325
        • Britain

        #4
        Re: 17pw26-4

        Hmm thats odd, are you using chassis ground and DCV ? If still out of whack your meter is dud because if the Psu did go that high and out of spec it would not work at all.
        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

        https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • charlierfc
          Senior Member
          • Mar 2013
          • 93
          • scotland

          #5
          Re: 17pw26-4

          was seriously starting to doubt my meter, i put another battery in but still the same. for some reason my pictures are not uploading

          Comment

          • charlierfc
            Senior Member
            • Mar 2013
            • 93
            • scotland

            #6
            Re: 17pw26-4

            pic? if it uploads
            Attached Files

            Comment

            • charlierfc
              Senior Member
              • Mar 2013
              • 93
              • scotland

              #7
              Re: 17pw26-4

              more pics
              Attached Files

              Comment

              • ReeceyBurger123
                Never Give Up !
                • May 2014
                • 7325
                • Britain

                #8
                Re: 17pw26-4

                Your measuring it on ACV lol set it to DC and let us know what you read.
                Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                https://www.facebook.com/Telford-Tel...7894576335359/

                Comment

                • charlierfc
                  Senior Member
                  • Mar 2013
                  • 93
                  • scotland

                  #9
                  Re: 17pw26-4

                  ahhhh wrong setting on multimeter! what a t*t.... ok so getting 24v to inverter, but one of the 125v fuse is out, how can this be blown with the 24v going in? must indicate another problem on the inverter... any ideas?

                  Comment

                  • ReeceyBurger123
                    Never Give Up !
                    • May 2014
                    • 7325
                    • Britain

                    #10
                    Re: 17pw26-4

                    And bad news too I know the fault with your inverter not an easy fix Will link my thread about the same one.
                    Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                    https://www.facebook.com/Telford-Tel...7894576335359/

                    Comment

                    • diif
                      Badcaps Legend
                      • Feb 2014
                      • 6978
                      • England

                      #11
                      Re: 17pw26-4

                      Plug your black lead into the port marked COM and measure again.

                      Comment

                      • ReeceyBurger123
                        Never Give Up !
                        • May 2014
                        • 7325
                        • Britain

                        #12
                        Re: 17pw26-4

                        Repair of this inverter, also your Psu will need some caps changing before it fails next too.

                        https://www.badcaps.net/forum/showth...=Ssi_400_14a01
                        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                        https://www.facebook.com/Telford-Tel...7894576335359/

                        Comment

                        • charlierfc
                          Senior Member
                          • Mar 2013
                          • 93
                          • scotland

                          #13
                          Re: 17pw26-4

                          any point in replace F102 on the inverter? chances are it will instantly POP?

                          Comment

                          • ReeceyBurger123
                            Never Give Up !
                            • May 2014
                            • 7325
                            • Britain

                            #14
                            Re: 17pw26-4

                            Heres a Pw26 I repcapped, I really urge you to replace the caps on it as they wont be long off failing, replace them with brand new high quality capacitors.
                            Attached Files
                            Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                            https://www.facebook.com/Telford-Tel...7894576335359/

                            Comment

                            • ReeceyBurger123
                              Never Give Up !
                              • May 2014
                              • 7325
                              • Britain

                              #15
                              Re: 17pw26-4

                              Originally posted by charlierfc
                              any point in replace F102 on the inverter? chances are it will instantly POP?
                              Yes read my thread I linked, if the fets blow the fuse will blow as well in most cases.
                              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                              https://www.facebook.com/Telford-Tel...7894576335359/

                              Comment

                              • charlierfc
                                Senior Member
                                • Mar 2013
                                • 93
                                • scotland

                                #16
                                Re: 17pw26-4

                                so.....ebay for a new inverter..... i can replace caps ect...fets naaaa

                                thank you for all your help it is much appreciated.

                                Comment

                                • charlierfc
                                  Senior Member
                                  • Mar 2013
                                  • 93
                                  • scotland

                                  #17
                                  Re: 17pw26-4

                                  http://www.ebay.co.uk/itm/4614-Inver...IAAOSwHaBWiobD

                                  would this pack fix the inverter? at only 3 quid.. worth a shot...they inverters are hard to get

                                  Comment

                                  • michael dranfield
                                    Badcaps Veteran
                                    • Jan 2016
                                    • 232
                                    • England

                                    #18
                                    Re: 17pw26-4

                                    Most common fault on the inverter is the FET s going short part is A04614 .

                                    Comment

                                    • vinceroger69
                                      Badcaps Legend
                                      • Mar 2012
                                      • 6714
                                      • uk

                                      #19
                                      Re: 17pw26-4

                                      I have used this company before never had a issue with them some good prices too so for that price certainly worth a try.

                                      Comment

                                      • charlierfc
                                        Senior Member
                                        • Mar 2013
                                        • 93
                                        • scotland

                                        #20
                                        Re: 17pw26-4

                                        how do you figure out the faulty ones? the top fuse is blown, so i assume its the top of the board, how do you test these?

                                        Comment

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