LG Flatron L204WS

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  • matthmal
    Badcaps Veteran
    • Nov 2012
    • 306
    • Malta

    #41
    Re: LG Flatron L204WS

    No it does not smell burnt. let me take the picture...

    Comment

    • matthmal
      Badcaps Veteran
      • Nov 2012
      • 306
      • Malta

      #42
      Re: LG Flatron L204WS

      this is the best that i can take...
      Attached Files

      Comment

      • selldoor
        Slow Learner
        • Dec 2010
        • 7870

        #43
        Re: LG Flatron L204WS

        HaHa we generally refer to that as the bottom of the board
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • matthmal
          Badcaps Veteran
          • Nov 2012
          • 306
          • Malta

          #44
          Re: LG Flatron L204WS

          sorry my mistake.
          Attached Files

          Comment

          • selldoor
            Slow Learner
            • Dec 2010
            • 7870

            #45
            Re: LG Flatron L204WS

            Hmm - no fuses or anything obvious with it all connected and switched on
            can you test what I think may be two voltage regulators.- bottom left of the pic. ( Pictures are improving )

            Read this, by retiredcaps, on how to test. The bigger one if you post the part number I will check it is a regulator - or you can.

            https://www.badcaps.net/forum/showthread.php?p=261329

            EDIT looks like 1117F 18 xxx which means it is a 1.8v regulator
            Last edited by selldoor; 12-01-2012, 08:18 AM.
            Please upload pictures using attachment function when ask for help on the repair
            http://www.badcaps.net/forum/showthread.php?t=39740

            Comment

            • matthmal
              Badcaps Veteran
              • Nov 2012
              • 306
              • Malta

              #46
              Re: LG Flatron L204WS

              will do and get back to you

              Comment

              • matthmal
                Badcaps Veteran
                • Nov 2012
                • 306
                • Malta

                #47
                Re: LG Flatron L204WS

                Voltage Regulator Test 1:

                Model:
                KIA
                1117F
                18738

                Results:
                Pin 1 -> ranging -1.8 to +1.92
                Pin 2 -> ranging -1.8 to +1.89
                Pin 3-> ranging -1.8 to +1.91

                Voltage Regulator Test 2:

                Model:
                EH16A
                714J92

                Results:
                Pin 1 -> ranging -1.8 to +1.89
                Pin 2 -> ranging -1.68 to +1.81
                Pin 3-> ranging -1.86 to +1.83

                Comment

                • selldoor
                  Slow Learner
                  • Dec 2010
                  • 7870

                  #48
                  Re: LG Flatron L204WS

                  Well at least we have some voltages!! they should however be STEADY at 1.8.
                  hence the term regulator

                  Wonder if your meter batteries are ok - been getting a lot of work?



                  As there are only 3 caps on the board - Sam Young? - not great! perhaps change them.
                  Last edited by selldoor; 12-01-2012, 10:17 AM.
                  Please upload pictures using attachment function when ask for help on the repair
                  http://www.badcaps.net/forum/showthread.php?t=39740

                  Comment

                  • matthmal
                    Badcaps Veteran
                    • Nov 2012
                    • 306
                    • Malta

                    #49
                    Re: LG Flatron L204WS

                    Hmmmm it has a 9v battery and i dont use it very often. Ill replace the caps and report again. So does it mean that the regulators are bad?

                    Comment

                    • selldoor
                      Slow Learner
                      • Dec 2010
                      • 7870

                      #50
                      Re: LG Flatron L204WS

                      Not certain - they generally fail by producing a steady but incorrect voltage
                      or no voltage at all. I know that having a failing cap connected to a VR can
                      produce bad results - I would hope that they are ok and see what replacement caps do. What we need to find is more voltages. A couple of things to try would be test the connector pins on the power supply without the main board connected. Also and you will need to be careful check the voltage on the start up cap - at one point I though it was a bit rounded but then decided it was just the picture. It is a 50v one between the heatsink and the yellow transformer. So you will need power on and meter on v200dc -obviously it should not be more than 50vdc you can measure topside if you can get at it or underneath. Set it all up so you can measure then switch it on careful not to touch the BIG caps.
                      Please upload pictures using attachment function when ask for help on the repair
                      http://www.badcaps.net/forum/showthread.php?t=39740

                      Comment

                      • matthmal
                        Badcaps Veteran
                        • Nov 2012
                        • 306
                        • Malta

                        #51
                        Re: LG Flatron L204WS

                        The cap that is between the heatsink and the yellow transformer is supposed to be 50v 33uF and when tested it is ranging between 9.5 to 14.3V. Well I guess it's a bad cap. Can the cap be replaced with a different one as I don't have one that type of uF.

                        I will do the other tests soon...

                        Comment

                        • matthmal
                          Badcaps Veteran
                          • Nov 2012
                          • 306
                          • Malta

                          #52
                          Re: LG Flatron L204WS

                          can a 16v 100uF cap be replaced with a 25v 220uF cap?

                          Can you please tell me how to know if a bigger uF is good or not?

                          Comment

                          • budm
                            Badcaps Legend
                            • Feb 2010
                            • 40746
                            • USA

                            #53
                            Re: LG Flatron L204WS

                            It depends on how it is used, if it is used for timing circuits, then No. If it is used for simple filter cap, then you can use it for now just for testing the function of the circuit.
                            Higher voltage is OK to use as long as the body still fit the board since higher voltage cap will be bigger than the lower voltage cap with the same capacitance rating.
                            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

                            • matthmal
                              Badcaps Veteran
                              • Nov 2012
                              • 306
                              • Malta

                              #54
                              Re: LG Flatron L204WS

                              Originally posted by matthmal
                              The cap that is between the heatsink and the yellow transformer is supposed to be 50v 33uF and when tested it is ranging between 9.5 to 14.3V. Well I guess it's a bad cap. Can the cap be replaced with a different one as I don't have one that type of uF.

                              I will do the other tests soon...
                              So can this cap be replaced with something else?

                              Comment

                              • selldoor
                                Slow Learner
                                • Dec 2010
                                • 7870

                                #55
                                Re: LG Flatron L204WS

                                I believe you could use a 50v 47uf 50v68uf
                                25v 33uf 25v47uf 25v68uf

                                Perhaps even higher u rating for testing but not lower than 25v and not lower than 33uf
                                Please upload pictures using attachment function when ask for help on the repair
                                http://www.badcaps.net/forum/showthread.php?t=39740

                                Comment

                                • matthmal
                                  Badcaps Veteran
                                  • Nov 2012
                                  • 306
                                  • Malta

                                  #56
                                  Re: LG Flatron L204WS

                                  i do have 50v 47uf cause u do have that. will try it and keep you posted

                                  Comment

                                  • matthmal
                                    Badcaps Veteran
                                    • Nov 2012
                                    • 306
                                    • Malta

                                    #57
                                    Re: LG Flatron L204WS

                                    i've replaced the cap and it gave me the same results as the old one + i got a shock hehe. well having the same results was not worth the shock

                                    Comment

                                    • selldoor
                                      Slow Learner
                                      • Dec 2010
                                      • 7870

                                      #58
                                      Re: LG Flatron L204WS

                                      Good to get a few jolts early in your introduction to electronics- makes you more careful
                                      if not dead Perhaps use an RCD device.?

                                      Pity it didnt help - back to the drawing board - when you say same result do you mean the
                                      varying voltage on the cap? At least its another voltage.

                                      Can you check the voltage across the two big resistors on the main board.

                                      Perhaps also test the resistance - Power OFF meter on ohms ???
                                      Type in Hobby Resistance into your browser and you will find a site that
                                      gives you the resistance colour band guide.See on there what resistance to expect and set your meter range accordingly.
                                      Please upload pictures using attachment function when ask for help on the repair
                                      http://www.badcaps.net/forum/showthread.php?t=39740

                                      Comment

                                      • matthmal
                                        Badcaps Veteran
                                        • Nov 2012
                                        • 306
                                        • Malta

                                        #59
                                        Re: LG Flatron L204WS

                                        yeah we do have an rcd device in our house but it was only a small shock hehe. i meant same voltage results for the cap as it was before.

                                        may i ask which resistors? yeah i know im a little bit of a headache but i'm new to electronics hehe

                                        Comment

                                        • selldoor
                                          Slow Learner
                                          • Dec 2010
                                          • 7870

                                          #60
                                          Re: LG Flatron L204WS

                                          The Big Blue Bodied ones
                                          Please upload pictures using attachment function when ask for help on the repair
                                          http://www.badcaps.net/forum/showthread.php?t=39740

                                          Comment

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