Insignia ns-42pdp no power

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  • TimT
    Badcaps Veteran
    • Nov 2012
    • 268
    • us

    #1

    Insignia ns-42pdp no power

    I have a Insignia ns-42pdp power LED comes on red then when i turn on the TV the led is blue. there is a buzzing for one of the caps for about 3 seconds the TV turns off..any suggestions? should I replace the cap? or could something else be causing the cap to buzz..
    Attached Files
  • TimT
    Badcaps Veteran
    • Nov 2012
    • 268
    • us

    #2
    Re: Insignia ns-42pdp no power

    also there is a red LED light on power board. when I turn Tv on and hear the buzz from the cap the blue light changes to red on front of Tv and the LED on power board lights up. I assume this means there is a problem on power board. LED is marked LED601

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #3
      Re: Insignia ns-42pdp no power

      Unplug the two large connectors on the top left of the board then power it up again. See if it stays on.
      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

      • TimT
        Badcaps Veteran
        • Nov 2012
        • 268
        • us

        #4
        Re: Insignia ns-42pdp no power

        with both unplugged the Tv stays on! I tested pin 5vctr at 5.2v if I plug in x601 connector then Tv goes to standby and red led lights up. but if i just plug in connector X602 the Tv stays on and I get a picture on half the screen. X601 run over to the right side of tv.. I guess it controls the backlight and the other half of screen?
        Attached Files

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #5
          Re: Insignia ns-42pdp no power

          You have a bad Z-sustain, I suspect.
          https://www.youtube.com/watch?v=Y8MNQYXw8E0

          A plasma panel doesn't have a backlight. It works entirely differently from an LCD. Each pixel independently emits its own light compared to an LCD which uses a uniform light source and blocks/allows through out the light at the pixel level.
          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

          • TimT
            Badcaps Veteran
            • Nov 2012
            • 268
            • us

            #6
            Re: Insignia ns-42pdp no power

            this is the board that if connected will cause tv not to work.
            Attached Files

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #7
              Re: Insignia ns-42pdp no power

              Yeah. That's the Z-sustain. Picture now looks purple, or dim, and/or slow to update, with that board removed?
              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

              • TimT
                Badcaps Veteran
                • Nov 2012
                • 268
                • us

                #8
                Re: Insignia ns-42pdp no power

                one half is very slow to update. the other half is not working... looks like alot of trouble to fix

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK

                  #9
                  Re: Insignia ns-42pdp no power

                  Remove the leftmost fuse from this image.
                  You should still have a dim/blur/ghosty picture but all of it should work now.
                  https://www.badcaps.net/forum/attach...0&d=1353864469
                  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

                  • TimT
                    Badcaps Veteran
                    • Nov 2012
                    • 268
                    • us

                    #10
                    Re: Insignia ns-42pdp no power

                    yes it works but it very slow refresh rate.. so I need to replace the Z sustain?

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK

                      #11
                      Re: Insignia ns-42pdp no power

                      Yes, or do the repair in the video if you have the equipment. If you can remove it, soldering a new one on is easy. But not everyone can as it takes a lot of heat.
                      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

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #12
                        Re: Insignia ns-42pdp no power

                        Note you only need to replace the Z-sustain, the Y-sustain is fine for now.
                        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

                        • TimT
                          Badcaps Veteran
                          • Nov 2012
                          • 268
                          • us

                          #13
                          Re: Insignia ns-42pdp no power

                          is that a part that digikey would have? thank you!

                          Comment

                          • tom66
                            EVs Rule
                            • Apr 2011
                            • 32560
                            • UK

                            #14
                            Re: Insignia ns-42pdp no power

                            Unfortunately not.
                            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

                            • TimT
                              Badcaps Veteran
                              • Nov 2012
                              • 268
                              • us

                              #15
                              Re: Insignia ns-42pdp no power

                              I picked up a used sustain board from a television repair shop in town! and I'm happy to say that what's the problem. however I did notice that when the screen is black there are red speckles.. they only show up when there's a black screen other than that works fine. from what I read the voltage needs turn down?

                              Comment

                              • tom66
                                EVs Rule
                                • Apr 2011
                                • 32560
                                • UK

                                #16
                                Re: Insignia ns-42pdp no power

                                It looks like LG plasma tech... Red sparklies can mean control board needs new firmware but sometimes you can get lucky.

                                Post a picture of the Y-sustain and power supply so I can highlight the adjustments.
                                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

                                • TimT
                                  Badcaps Veteran
                                  • Nov 2012
                                  • 268
                                  • us

                                  #17
                                  Re: Insignia ns-42pdp no power

                                  there seems to be some ajustment " knobs " on both boards..
                                  Attached Files

                                  Comment

                                  • tom66
                                    EVs Rule
                                    • Apr 2011
                                    • 32560
                                    • UK

                                    #18
                                    Re: Insignia ns-42pdp no power

                                    OK, first you want to drop Vs slightly.
                                    With the TV running, slowly adjust Vs and measure it with a multimeter. Drop it by about 5V.

                                    If the sparklies do not go away, try "setdn" adjustment -- tweak one way, if it gets worse, go the other way.
                                    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

                                    • TimT
                                      Badcaps Veteran
                                      • Nov 2012
                                      • 268
                                      • us

                                      #19
                                      Re: Insignia ns-42pdp no power

                                      that did the trick! thanks you!" learning something everyday :-)

                                      Comment

                                      • tom66
                                        EVs Rule
                                        • Apr 2011
                                        • 32560
                                        • UK

                                        #20
                                        Re: Insignia ns-42pdp no power

                                        What did you end up adjusting in the end?
                                        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

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