Inverter tester using old CFL

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  • tn245
    Badcaps Veteran
    • Oct 2013
    • 530
    • UK

    #41
    Re: Inverter tester using old CFL

    Can I use this method with a CFL to test this inverter? It's from a 42 inch TV. There's one transformer driving all the bulbs. Would I just hook one CFL up between the two inverter outputs?
    Attached Files

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    • multimeter
      Badcaps Veteran
      • Jan 2011
      • 739
      • united kingdom

      #42
      Re: Inverter tester using old CFL

      Originally posted by Measuray
      Would a device like this workout more better?

      http://www.lcd-pdparts.com/ViewDetai...ProductID=1813

      CCFL & LCD TV Monitor Backlight Tester
      VIP Price:$16.30
      thats for testing ccfl tubes,the bulbs in question will test the inverter for soundness
      fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!

      ----------------------------------------------
      please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!

      Comment

      • farman
        Banned
        • Aug 2013
        • 2
        • ksa

        #43
        Re: Inverter tester using old CFL

        thanksssssssssssssssss

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #44
          Re: Inverter tester using old CFL

          Another tips for using CFL for testing:
          https://www.badcaps.net/forum/showth...x+dx-40l261a12
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment

          • Agent24
            I see dead caps
            • Oct 2007
            • 4913
            • New Zealand

            #45
            Re: Inverter tester using old CFL

            Do you know if these bulbs cause any more stress to the inverter than the correct CCFLs?

            I ask because I had the idea to use this to test a couple of monitors which shutdown after 10-20 minutes rather than a few seconds. Would it be OK to run the monitor with these CFLs for that long?
            "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
            -David VanHorn

            Comment

            • goontron
              5000!
              • Dec 2011
              • 4108
              • US

              #46
              Re: Inverter tester using old CFL

              Originally posted by Agent24
              Do you know if these bulbs cause any more stress to the inverter than the correct CCFLs?

              I ask because I had the idea to use this to test a couple of monitors which shutdown after 10-20 minutes rather than a few seconds. Would it be OK to run the monitor with these CFLs for that long?
              from my studies on arc tubes you should be fine. just don't expect much lite out of that CFL tube.
              Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....

              "Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

              Excuse me while i do something dangerous


              You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

              Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

              Follow the white rabbit.

              Comment

              • Agent24
                I see dead caps
                • Oct 2007
                • 4913
                • New Zealand

                #47
                Re: Inverter tester using old CFL

                Originally posted by goontron
                from my studies on arc tubes you should be fine. just don't expect much lite out of that CFL tube.
                Do you mean "Light" or was that a typo of "Life"? And if the latter - why?
                "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                -David VanHorn

                Comment

                • goontron
                  5000!
                  • Dec 2011
                  • 4108
                  • US

                  #48
                  Re: Inverter tester using old CFL

                  Originally posted by Agent24
                  Do you mean "Light" or was that a typo of "Life"? And if the latter - why?
                  that was an auto carrot of light, sorry.
                  Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....

                  "Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

                  Excuse me while i do something dangerous


                  You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

                  Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

                  Follow the white rabbit.

                  Comment

                  • Agent24
                    I see dead caps
                    • Oct 2007
                    • 4913
                    • New Zealand

                    #49
                    Re: Inverter tester using old CFL

                    Originally posted by goontron
                    that was an auto carrot of light, sorry.
                    No worries, might give it a go tomorrow then.
                    "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                    -David VanHorn

                    Comment

                    • mmartell
                      Badcaps Legend
                      • Oct 2013
                      • 3189
                      • Canada

                      #50
                      Re: Inverter tester using old CFL

                      Originally posted by goontron
                      that was an auto carrot of light, sorry.
                      Lol too funny.

                      Comment

                      • goontron
                        5000!
                        • Dec 2011
                        • 4108
                        • US

                        #51
                        Re: Inverter tester using old CFL

                        Originally posted by mmartell
                        Lol too funny.
                        sometimes i wonder if the google devs are screwing with people.
                        Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....

                        "Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

                        Excuse me while i do something dangerous


                        You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

                        Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

                        Follow the white rabbit.

                        Comment

                        • vusi
                          New Member
                          • Jan 2015
                          • 9
                          • South Africa

                          #52
                          Re: Inverter tester using old CFL

                          Originally posted by budm
                          Do not throw away those broken CFL (14Watts or smaller), you can use them for testing your LCD monitor inverter circuits without buying spare lamps for testing.
                          You can solder the wires directly to the connectors on the inverter board or you can get the correct connectors but then you have to have more than one type.
                          I tested it out on my lamp tester board as you can see in the pictures.
                          I open up the lamp assembly using small hack saw just enough for me to crack it open, just be real careful.
                          Enjoy!
                          great stuff,

                          Comment

                          • tom66
                            EVs Rule
                            • Apr 2011
                            • 32560
                            • UK

                            #53
                            Re: Inverter tester using old CFL

                            Useful info - stickied
                            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

                            • lalin
                              M
                              • Apr 2015
                              • 20
                              • us

                              #54
                              Re: Inverter tester using old CFL

                              I guess you can use the same method on an LCD TV but there are many more lamps, is that practical?

                              Comment

                              • SteveNielsen
                                Retired Tech
                                • Jun 2012
                                • 2327
                                • USA

                                #55
                                Re: Inverter tester using old CFL

                                Yes, that is the point of the thread isn't it? It is for testing inverter outputs, not replacing bad tubes.

                                Comment

                                • 2014Sorentolover
                                  New Member
                                  • Aug 2015
                                  • 1
                                  • Egypt

                                  #56
                                  Re: Inverter tester using old CFL

                                  Great idea, Thank you.

                                  Comment

                                  • bruvinsk
                                    New Member
                                    • Nov 2015
                                    • 1
                                    • Canada

                                    #57
                                    Re: Inverter tester using old CFL

                                    Do all these techniques will apply to testing inverter for 40" TV or I need to use different bulbs?

                                    Thanks

                                    Comment

                                    • waldoalvarez00
                                      Senior Member
                                      • Dec 2015
                                      • 57
                                      • Dominican Republic

                                      #58
                                      Re: Inverter tester using old CFL

                                      Originally posted by Measuray
                                      Would a device like this workout more better?

                                      http://www.lcd-pdparts.com/ViewDetai...ProductID=1813

                                      CCFL & LCD TV Monitor Backlight Tester
                                      VIP Price:$16.30
                                      Seems so, but i think an old monitor inverter could do the same.

                                      Comment

                                      • orangecomputech
                                        New Member
                                        • Jan 2016
                                        • 7
                                        • india

                                        #59
                                        Re: Inverter tester using old CFL

                                        Thanks man well good information ........

                                        Comment

                                        • Roman123
                                          New Member
                                          • Oct 2015
                                          • 7
                                          • RUSSIA

                                          #60
                                          Re: Inverter tester using old CFL

                                          Good idea todai check

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