Baird X37DTV stobe Backlight issue

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  • Mikeyboy2007
    Badcaps Veteran
    • Mar 2013
    • 745
    • Scotland
    #1

    Baird X37DTV stobe Backlight issue

    hi guys im a newbie on this, had luck of repairing tvs up till my last recent few tvs... this one is a Baird X37DTV (rather sh*t make) but prefer it not going to the Dump like i see so many people do. the problem is when tv is switched on itjust flashes like a strobe, tried changing the invertor to the exact same one and has not fixed the problem, changed a Bulging cap on the poer board, still didnt do the trick > any ideas guys ??
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Baird X37DTV stobe Backlight issue

      Primary capacitor can often fail on PSU which can cause rapid strobing.
      How about pictures of the boards?
      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

        • Mikeyboy2007
          Badcaps Veteran
          • Mar 2013
          • 745
          • Scotland
          #3
          Re: Baird X37DTV stobe Backlight issue

          ok give me 5 minutes i will pop open the tv and take some pictures.

            Comment

            • Mikeyboy2007
              Badcaps Veteran
              • Mar 2013
              • 745
              • Scotland
              #4
              Re: Baird X37DTV stobe Backlight issue

              hope this helps mate
              Attached Files

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: Baird X37DTV stobe Backlight issue

                  Can you remove the metal shields on the power supply so we can see underneath them?
                  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

                    • Mikeyboy2007
                      Badcaps Veteran
                      • Mar 2013
                      • 745
                      • Scotland
                      #6
                      Re: Baird X37DTV stobe Backlight issue

                      yeah mate no problem, couple of minutes cheers

                        Comment

                        • Mikeyboy2007
                          Badcaps Veteran
                          • Mar 2013
                          • 745
                          • Scotland
                          #7
                          Re: Baird X37DTV stobe Backlight issue

                          hope these help. think thats thermal paste that was bonding the metal sheets to the top of PSU components
                          Attached Files

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK
                              #8
                              Re: Baird X37DTV stobe Backlight issue

                              It looks like the end of that large capacitor has one lead pushed out, which indicates it is failed.
                              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

                                • Mikeyboy2007
                                  Badcaps Veteran
                                  • Mar 2013
                                  • 745
                                  • Scotland
                                  #9
                                  Re: Baird X37DTV stobe Backlight issue

                                  can i repair ?

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK
                                      #10
                                      Re: Baird X37DTV stobe Backlight issue

                                      It can be replaced. Can you get a picture facing the leads?
                                      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

                                        • Mikeyboy2007
                                          Badcaps Veteran
                                          • Mar 2013
                                          • 745
                                          • Scotland
                                          #11
                                          Re: Baird X37DTV stobe Backlight issue

                                          by leads do you mean the two metal bits going into the Cap ? sorry if im wrong, bit new to all this, susualy just replace boards but getting too expensive, thanks for all your help mate

                                            Comment

                                            • tom66
                                              EVs Rule
                                              • Apr 2011
                                              • 32560
                                              • UK
                                              #12
                                              Re: Baird X37DTV stobe Backlight issue

                                              Yep, those are the leads.
                                              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

                                                • Mikeyboy2007
                                                  Badcaps Veteran
                                                  • Mar 2013
                                                  • 745
                                                  • Scotland
                                                  #13
                                                  Re: Baird X37DTV stobe Backlight issue

                                                  sorry about all the dust, need to get it all cleaned.
                                                  Attached Files

                                                    Comment

                                                    • tom66
                                                      EVs Rule
                                                      • Apr 2011
                                                      • 32560
                                                      • UK
                                                      #14
                                                      Re: Baird X37DTV stobe Backlight issue

                                                      Huh. I thought I saw the lead bulging out. I don't know if it is faulty. How often does it flicker? i.e. 10 times a second, one a second, etc...
                                                      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

                                                        • Mikeyboy2007
                                                          Badcaps Veteran
                                                          • Mar 2013
                                                          • 745
                                                          • Scotland
                                                          #15
                                                          Re: Baird X37DTV stobe Backlight issue

                                                          around 5, just goes like a strobe.. can upload a video if any help ?

                                                            Comment

                                                            • Mikeyboy2007
                                                              Badcaps Veteran
                                                              • Mar 2013
                                                              • 745
                                                              • Scotland
                                                              #16
                                                              Re: Baird X37DTV stobe Backlight issue

                                                              see if this is any help mate, forgot to mention after 10 minutes or so the tv backlight stays on solid.. just flashes like hell till then

                                                              http://www.youtube.com/watch?v=H7LhU...ature=youtu.be

                                                                Comment

                                                                • tom66
                                                                  EVs Rule
                                                                  • Apr 2011
                                                                  • 32560
                                                                  • UK
                                                                  #17
                                                                  Re: Baird X37DTV stobe Backlight issue

                                                                  OK, in which case, do you have a hairdryer?
                                                                  Heat up the capacitor we have discussed previously. See if it begins to stop flickering.
                                                                  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

                                                                    • Mikeyboy2007
                                                                      Badcaps Veteran
                                                                      • Mar 2013
                                                                      • 745
                                                                      • Scotland
                                                                      #18
                                                                      Re: Baird X37DTV stobe Backlight issue

                                                                      ok mate will try that tomorrow and get back to you , not got a hairdryer lol

                                                                        Comment

                                                                        • tom66
                                                                          EVs Rule
                                                                          • Apr 2011
                                                                          • 32560
                                                                          • UK
                                                                          #19
                                                                          Re: Baird X37DTV stobe Backlight issue

                                                                          Any kind of heat source works.
                                                                          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

                                                                            • Mikeyboy2007
                                                                              Badcaps Veteran
                                                                              • Mar 2013
                                                                              • 745
                                                                              • Scotland
                                                                              #20
                                                                              Re: Baird X37DTV stobe Backlight issue

                                                                              ok mate think i have a small heat gun kicking around will have a hunt for it n post results hopefully tonight

                                                                                Comment

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