Panasonic TX-37LX85P blink 3 times

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  • rtstorm
    Badcaps Veteran
    • Feb 2012
    • 971
    • Croatia

    #21
    Re: Panasonic TX-37LX85P blink 3 times

    Voltage is also 0V
    Attached Files
    ...the quieter you become the more you are able to hear...

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #22
      Re: Panasonic TX-37LX85P blink 3 times

      OK, this indicates a lack of SUB5V. Can you locate that pin on PSU and test.
      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.

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      • rtstorm
        Badcaps Veteran
        • Feb 2012
        • 971
        • Croatia

        #23
        Re: Panasonic TX-37LX85P blink 3 times

        I have only at 3 point 5V, all other is 0V.
        Attached Files
        ...the quieter you become the more you are able to hear...

        Comment

        • rtstorm
          Badcaps Veteran
          • Feb 2012
          • 971
          • Croatia

          #24
          Re: Panasonic TX-37LX85P blink 3 times

          Ok, i check power supply board, and i nthink there is a problem in HOT part of the board, i dont have any power outputting the transformators T803 and T804
          ...the quieter you become the more you are able to hear...

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #25
            Re: Panasonic TX-37LX85P blink 3 times

            OK, there should be a voltage, 17V, always present, but you do not see this?

            How are the voltages at pin 6 and pin 15?
            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.

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            • rtstorm
              Badcaps Veteran
              • Feb 2012
              • 971
              • Croatia

              #26
              Re: Panasonic TX-37LX85P blink 3 times

              0V both
              ...the quieter you become the more you are able to hear...

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #27
                Re: Panasonic TX-37LX85P blink 3 times

                Ok, what voltage do you see at RELAY_5V6 (pin #5)?
                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.

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                • rtstorm
                  Badcaps Veteran
                  • Feb 2012
                  • 971
                  • Croatia

                  #28
                  Re: Panasonic TX-37LX85P blink 3 times

                  on #5 pin i have 5.75V
                  ...the quieter you become the more you are able to hear...

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #29
                    Re: Panasonic TX-37LX85P blink 3 times

                    OK, that is good. Back to the main board. It isn't turning on the relay signal for some reason. Can you check page 49, in particular these test points:
                    - voltage across C5653 (near IC5602)
                    - voltage across C5655 (same area)

                    We noticed before SUB5V is missing, this is probably causing the 3 blinks now I think about it.
                    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

                      #30
                      Re: Panasonic TX-37LX85P blink 3 times

                      IC5602 is near the connector going to the LCD panel if it helps.
                      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.

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                      • rtstorm
                        Badcaps Veteran
                        • Feb 2012
                        • 971
                        • Croatia

                        #31
                        Re: Panasonic TX-37LX85P blink 3 times

                        i test #6 and #15 again with connected clamps when turning on TV, and the result is that #6 have 4.75V for a few sec, and then you hear click and back to 0V. #15 i always 0V
                        ...the quieter you become the more you are able to hear...

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #32
                          Re: Panasonic TX-37LX85P blink 3 times

                          Ah, good, some progress, but when #6 is high (after first click, before second), what is pin #20 or #21 doing? Should be 17V.
                          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.

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                          • rtstorm
                            Badcaps Veteran
                            • Feb 2012
                            • 971
                            • Croatia

                            #33
                            Re: Panasonic TX-37LX85P blink 3 times

                            Nope, #20 and #21 os 0V when turning ON.

                            I find IC5602, and i find that one leg of capacitor is broken, (you can see in the picture), and i have no clue how will i solder it back. if you can see that the part of the board is still on the capacitor.
                            Attached Files
                            ...the quieter you become the more you are able to hear...

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #34
                              Re: Panasonic TX-37LX85P blink 3 times

                              Which end (positive or negative) was that lead connected to?
                              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

                              • rtstorm
                                Badcaps Veteran
                                • Feb 2012
                                • 971
                                • Croatia

                                #35
                                Re: Panasonic TX-37LX85P blink 3 times

                                negative (the one with red mark)
                                ...the quieter you become the more you are able to hear...

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK

                                  #36
                                  Re: Panasonic TX-37LX85P blink 3 times

                                  In which case you can find a ground on the board somewhere and just solder the lead to there.
                                  Closer the better.

                                  I'm pretty sure the green copper area right next to it is ground, you can scrape the soldermask (green layer) off carefully with a screwdriver, then solder to that.
                                  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

                                  • rtstorm
                                    Badcaps Veteran
                                    • Feb 2012
                                    • 971
                                    • Croatia

                                    #37
                                    Re: Panasonic TX-37LX85P blink 3 times

                                    Ok, i solder it to some ground nearby.

                                    Now TV blink 4 times red, no more 3.

                                    i wrote in picture the voltages
                                    Attached Files
                                    ...the quieter you become the more you are able to hear...

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK

                                      #38
                                      Re: Panasonic TX-37LX85P blink 3 times

                                      Check your wiring, you just shorted that capacitor "470" positive to GND.
                                      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

                                      • rtstorm
                                        Badcaps Veteran
                                        • Feb 2012
                                        • 971
                                        • Croatia

                                        #39
                                        Re: Panasonic TX-37LX85P blink 3 times

                                        Ok, we are now back to 3 blink LED. I solder on wrong place. Check voltages, they are still the same as in the picture above.
                                        ...the quieter you become the more you are able to hear...

                                        Comment

                                        • tom66
                                          EVs Rule
                                          • Apr 2011
                                          • 32560
                                          • UK

                                          #40
                                          Re: Panasonic TX-37LX85P blink 3 times

                                          Can you check the voltage at pin #4 of the Q5610 device.
                                          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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