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KDS K-92BW Turns off

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    #21
    Re: KDS K-92BW Turns off

    It is time for a clear focused picture using manage attachments function. Please do not post pictures inline as they slow down the loading of pages.

    For best picture quality and clarity take your boards to a window on a sunny day, turn flash off, and use macro mode. Take a top down view of all your boards (front and back). Make sure the photo is legible so that we can read the PCB printing clearly. A shutter speed of 1/125 or faster will produce nice clear focused pictures. Try to get a photo that is 2000x2000 resolution or as close as possible.

    Here is an example of the pictures we want.

    https://www.badcaps.net/forum/showpo...94&postcount=1
    --- begin sig file ---

    If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

    We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

    Please do not post inline and offsite as they slow down the loading of pages.

    --- end sig file ---

    Comment

      #22
      Re: KDS K-92BW Turns off

      hi I have a problem with my lcd monitor when i turn it on it goes white for a few seconds and then goes black.
      I have a 200-000-1700tlbmh board the caps look fine.
      any help would be appreciated

      Comment

        #23
        Re: KDS K-92BW Turns off

        Read the post above yours and do as it says.
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

          #24
          Re: KDS K-92BW Turns off

          [QUOTE=slcomputer;300073]hi I have a problem with my lcd monitor when i turn it on it goes white for a few seconds and then goes black.
          I have a 200-000-1700tlbmh board the caps look fine.
          any help would be appreciated
          Attached Files
          Last edited by slcomputer; 01-06-2013, 06:51 PM.

          Comment

            #25
            Re: KDS K-92BW Turns off

            [QUOTE=slcomputer;300133]
            Originally posted by slcomputer View Post
            hi I have a problem with my lcd monitor when i turn it on it goes white for a few seconds and then goes black.
            I have a 200-000-1700tlbmh board the caps look fine.
            any help would be appreciated
            Green caps, third picture. Those need to be changed.
            There are 10 kind of people in this world: those that understand binary, and those who don't.
            • ASUS ROG Maximus IX Code
            • Intel Core i5-7600K 3.8GHz
            • 16gb GSKILL TridentZ RGB DDR4-3200
            • 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
            • Windows 10 Pro x64
            • GeForce GT1050
              2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job )

            Comment

              #26
              Re: KDS K-92BW Turns off

              do you mean the the caps on the powerboard?

              Comment

                #27
                Re: KDS K-92BW Turns off

                You may have more than one problem, one is that your power supply has bad caps, another one is that your LCD panel T-CON may not be getting the voltage feeding from the main board or the T-CON itself may have problem. You need to at least replace the bad caps first, bad cap can look normal without having domed top.
                Attached Files
                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

                  #28
                  Re: KDS K-92BW Turns off

                  Originally posted by slcomputer View Post
                  do you mean the the caps on the powerboard?
                  Yes. For a start. You can't really diagnose accurately with those caps in there.
                  There are 10 kind of people in this world: those that understand binary, and those who don't.
                  • ASUS ROG Maximus IX Code
                  • Intel Core i5-7600K 3.8GHz
                  • 16gb GSKILL TridentZ RGB DDR4-3200
                  • 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
                  • Windows 10 Pro x64
                  • GeForce GT1050
                    2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job )

                  Comment

                    #29
                    Re: KDS K-92BW Turns off

                    where do i but the caps do you know?
                    how do i check the fuses? do i use my multimeter?

                    Comment

                      #30
                      Re: KDS K-92BW Turns off

                      sorry I meant where do I buy the caps?

                      Comment

                        #31
                        Re: KDS K-92BW Turns off

                        I have check the fuses with dmm and they both read 000 so im guessing they aren't blown. Is this correct?

                        Comment

                          #32
                          Re: KDS K-92BW Turns off

                          can I check tha capacitors with a multi meter?

                          Comment

                            #33
                            Re: KDS K-92BW Turns off

                            Hi
                            1where do i but the caps do you know?

                            http://www.activecomponents.com/Page-Contact-Us_3.aspx
                            appear to sell good make caps

                            A lot of NZ members mention Jaycar?

                            Digikey

                            Mouser

                            RS direct.

                            2how do i check the fuses? do i use my multimeter?

                            Yes - as you have done - but was not required as it would not work as much as it does if the fuses were bad.

                            3 can I check the capacitors with a multi meter?

                            No, unless your meter has a capacittance test on it -
                            even then its not a good test.

                            I think you will need to change all the caps except the large one

                            BUT before you buy caps I want you to test the secondary resistance on the inverter transformers as the board looks
                            a bit browned I will post where you have to test soon.
                            Please upload pictures using attachment function when ask for help on the repair
                            http://www.badcaps.net/forum/showthread.php?t=39740

                            Comment

                              #34
                              Re: KDS K-92BW Turns off

                              Right Power off meter on ohms 2000 measure S1 >S2 and S3 >S4
                              and post the results.

                              I have also marked in yellow two components Q5 Q6 What is the part Number on them and is the bottom one in your picture burnt or is it just the picture.

                              If you take more try not to use flash and more natural light.
                              Please upload pictures using attachment function when ask for help on the repair
                              http://www.badcaps.net/forum/showthread.php?t=39740

                              Comment

                                #35
                                Re: KDS K-92BW Turns off

                                which components are marked yellow please
                                how do i test s1>s2 and s3 >s4 are they on the board if so where?
                                The two rectangle like parts on the board say they are T1 at top and t2 at bottom does that help?

                                Comment

                                  #36
                                  Re: KDS K-92BW Turns off

                                  730-703-1900tlm-lh eel19-a01700 hl 7118 is written on the rectangle square components does that help Im not sure are these the transformers how where do i test these do I use a multimeter?

                                  Comment

                                    #37
                                    Re: KDS K-92BW Turns off

                                    how do I test the secondary resistance on the inverter transformers

                                    Comment

                                      #38
                                      Re: KDS K-92BW Turns off

                                      Sorry - forgot to attach the picture
                                      Attached Files
                                      Please upload pictures using attachment function when ask for help on the repair
                                      http://www.badcaps.net/forum/showthread.php?t=39740

                                      Comment

                                        #39
                                        Re: KDS K-92BW Turns off

                                        when I test s1 s2 s3 s4 they all come up with 000 the part number on the resistors in yellow is k3615

                                        Comment

                                          #40
                                          Re: KDS K-92BW Turns off

                                          there seems to be some black by the T1 but I was told that is just because these get quite hot so its normal is that right?

                                          Comment

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