LCD TV (Matsui) - Blank Screen, Inverter problem

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  • Paul Leadbeater
    New Member
    • Aug 2013
    • 6
    • UK
    #1

    LCD TV (Matsui) - Blank Screen, Inverter problem

    I have a Matsui MAT15L607 Flat Screen TV with the following problem:-
    TV turns on, screen lights up for 2 seconds then goes blank, sound is OK.
    Picture can be seen faintly when shining a light on the screen.

    I am fairly certain that this is due to a faulty Inverter board. I have also found out that the most common failure is faulty high voltage capacitors.

    My problem is that I cannot find a supplier for replacement capacitors.
    The inverter board is a Vestel 17IPS01-2 and the components are -
    C354 - 4.7 pF, 3000 volt capacitor;
    C355 & C356 - 12 pF, 3000 volt capacitors.

    I'm capable of replacing these items if only I can find somewhere to buy them!

    Any suggestions would be welcome. Thanks.
    Tags: None
    • Caleb
      Smokin IC's
      • Feb 2013
      • 645
      • USA
      #2
      Re: LCD TV (Matsui) - Blank Screen, Inverter problem

      In my limited experience, the inverter transformers are the most likely failure. If and when those little high voltage caps go its usually in a spectacular fashion with a big bang and magic smoke. Digikey will have those caps, not sure where you can find them on your side of the pond though, Tom may have some in his store. You can test the transformers with a multimeter on ohms if you find one that is not like the rest you will probably have the culprit, finding replacements can be difficult though.
      Liberating magic smoke one part at a time

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: LCD TV (Matsui) - Blank Screen, Inverter problem

          12pF 3KV:
          http://www.digikey.com/product-detai...070-ND/2589408

          4.7pf (or 5pF) 3kv hard to find them in stock.
          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

            • Paul Leadbeater
              New Member
              • Aug 2013
              • 6
              • UK
              #4
              Re: LCD TV (Matsui) - Blank Screen, Inverter problem

              Originally posted by Caleb
              In my limited experience, the inverter transformers are the most likely failure. If and when those little high voltage caps go its usually in a spectacular fashion with a big bang and magic smoke. Digikey will have those caps, not sure where you can find them on your side of the pond though, Tom may have some in his store. You can test the transformers with a multimeter on ohms if you find one that is not like the rest you will probably have the culprit, finding replacements can be difficult though.
              Thanks Caleb. I've got a multimeter, so I'll have a look at the transformers.

                Comment

                • Paul Leadbeater
                  New Member
                  • Aug 2013
                  • 6
                  • UK
                  #5
                  Re: LCD TV (Matsui) - Blank Screen, Inverter problem

                  Originally posted by budm
                  12pF 3KV:
                  http://www.digikey.com/product-detai...070-ND/2589408

                  4.7pf (or 5pF) 3kv hard to find them in stock.
                  Thanks budm. I don't know if the shipping costs from America to UK would be too expensive, so I'll need to keep looking in this country.

                    Comment

                    • vinceroger69
                      Badcaps Legend
                      • Mar 2012
                      • 6714
                      • uk
                      #6
                      Re: LCD TV (Matsui) - Blank Screen, Inverter problem

                      http://www.ebay.co.uk/sch/i.html?_fr...V&LH_PrefLoc=1
                      both values listed

                        Comment

                        • Paul Leadbeater
                          New Member
                          • Aug 2013
                          • 6
                          • UK
                          #7
                          Re: LCD TV (Matsui) - Blank Screen, Inverter problem

                          I don't know how I missed that! I've now ordered both items.
                          Thanks for the info.

                            Comment

                            • Paul Leadbeater
                              New Member
                              • Aug 2013
                              • 6
                              • UK
                              #8
                              Re: LCD TV (Matsui) - Blank Screen, Inverter problem

                              Originally posted by vinceroger69
                              http://www.ebay.co.uk/sch/i.html?_fr...V&LH_PrefLoc=1
                              both values listed
                              I don't know how I missed that!
                              I've now ordered both items.
                              Thanks for the info.

                                Comment

                                • vinceroger69
                                  Badcaps Legend
                                  • Mar 2012
                                  • 6714
                                  • uk
                                  #9
                                  Re: LCD TV (Matsui) - Blank Screen, Inverter problem

                                  glad the link helped you hope it fixes your issues.

                                    Comment

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