Panasonic TC-P42X2

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #21
    Re: Panasonic TC-P42X2

    Are Q001, Q002 in parallel? How about Q021, Q022? If so, lift a leg and test each individually.

    At $28, I would just say "screw it, I'll replace the board":
    http://www.ebay.com/itm/PANASONIC-TC...item27ccb797f1

    ...you'll spend too much replacing those to find you've got more faults like a blown MOSFET gate driver. (15V gate driver gets 200V shoved into output pin and it ain't happy one bit about 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

    • IamCanadian
      Senior Member
      • Nov 2012
      • 119
      • Canada

      #22
      Re: Panasonic TC-P42X2

      I checked them out of C

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #23
        Re: Panasonic TC-P42X2

        What do you mean out of "C"?

        There are more where that came from for nearly the same price:

        http://www.ebay.com/itm/PANASONIC-TC...item2c69a83c1f
        http://www.ebay.com/itm/PANASONIC-TC...item2c69a83c1f
        http://www.ebay.com/itm/PANASONIC-TC...item27ccb852da
        http://www.ebay.com/itm/SANYO-DP5071...item27c63fdfc7
        http://www.ebay.com/itm/SANYO-DP5074...item2c66e41aae
        http://www.ebay.com/itm/SANYO-DP4274...item2ec0df09ca
        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

        • IamCanadian
          Senior Member
          • Nov 2012
          • 119
          • Canada

          #24
          Re: Panasonic TC-P42X2

          Tested them with S and G legs up.
          I am going to check the SN the same way and if it needs them too, I will just buy a SN and SS..Prob be cheaper haha

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #25
            Re: Panasonic TC-P42X2

            You only need to lift S but that is pretty good indicator, the FETs are fried. Likely one failed which took out all four. Hopefully the SN is fine -- they rarely fail simultaneously. What is the part# of SN?
            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

            • IamCanadian
              Senior Member
              • Nov 2012
              • 119
              • Canada

              #26
              Re: Panasonic TC-P42X2

              TNPA5066 42.00 from same supplier as the SS

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #27
                Re: Panasonic TC-P42X2

                Plus $15 shipping though I suppose they might combine the shipping with the other one. Pretty pricey, does set start up with just SN? (it will likely throw 8 blinks for missing SS but if it doesn't do 4 blinks then there's no short.) How much was your bartered GPS worth for you?
                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

                • IamCanadian
                  Senior Member
                  • Nov 2012
                  • 119
                  • Canada

                  #28
                  Re: Panasonic TC-P42X2

                  Does not start with just SN with ss and sn unpluged it shows 7 blinks

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #29
                    Re: Panasonic TC-P42X2

                    SN may be short I wouldn't know why they both failed though, it's very rare.
                    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 TC-P42X2

                      One thing to try with both boards missing you should get 200V for a couple of seconds, with boards plugged in but no short you should still see 200V, so if SN is not shorted, 200V should be present.
                      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

                      • IamCanadian
                        Senior Member
                        • Nov 2012
                        • 119
                        • Canada

                        #31
                        Re: Panasonic TC-P42X2

                        With everything but the SS pluged in, when power cord is inserted, I get 2 clicks of the 2 switches and red led on front on solid, SPDIF light is visable for 1 second then .5 seconds after SPDIF light goes out the switches in the psu shut off, Leaving only stand by power.

                        after power is plugged in for about 20 seconds the front led flashed rapidly for about 30 seconds.....not a code flash I would say it is about 5-6 flashes per second.

                        Comment

                        • IamCanadian
                          Senior Member
                          • Nov 2012
                          • 119
                          • Canada

                          #32
                          Re: Panasonic TC-P42X2

                          Yes with both boards out, I get about 165v for a few seconds.

                          Is it possible that something is failing on the PS and just can not supply the Amperage to run?

                          Comment

                          • tom66
                            EVs Rule
                            • Apr 2011
                            • 32560
                            • UK

                            #33
                            Re: Panasonic TC-P42X2

                            165V? Are you sure? That's quite low for a plasma.
                            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

                            • IamCanadian
                              Senior Member
                              • Nov 2012
                              • 119
                              • Canada

                              #34
                              Re: Panasonic TC-P42X2

                              Yup 165v for sure on Vsus without SS and SN connected. and 0v with either one connected.

                              But the SN does not show a dead short so you would think you would see some kind of V with just the SN connected.
                              Last edited by IamCanadian; 11-12-2012, 02:36 PM.

                              Comment

                              • tom66
                                EVs Rule
                                • Apr 2011
                                • 32560
                                • UK

                                #35
                                Re: Panasonic TC-P42X2

                                What does the sticker on the plasma panel indicate for Vsus? I have only ever seen a low 175V Vsus on an old NEC/Pioneer plasma panel.
                                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

                                • IamCanadian
                                  Senior Member
                                  • Nov 2012
                                  • 119
                                  • Canada

                                  #36
                                  Re: Panasonic TC-P42X2

                                  No sticker showing voltages. Panel is MC106H30U13

                                  Comment

                                  • tom66
                                    EVs Rule
                                    • Apr 2011
                                    • 32560
                                    • UK

                                    #37
                                    Re: Panasonic TC-P42X2

                                    Very odd. Is there a Vsus adjust pot? Maybe this is the "NeoPDP" Panasonic keep going on about... single piece of glass, lower power consumption, and cheaper to manufacture.
                                    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

                                    • IamCanadian
                                      Senior Member
                                      • Nov 2012
                                      • 119
                                      • Canada

                                      #38
                                      Re: Panasonic TC-P42X2

                                      VR251 is right next to the vsus discharge pin so it would appear so, I know the Vsus is adjustable from the service menu with low and high as the options.

                                      TV was built Oct 2010...wonder if I can call pana and nag them for a new one

                                      Comment

                                      • tom66
                                        EVs Rule
                                        • Apr 2011
                                        • 32560
                                        • UK

                                        #39
                                        Re: Panasonic TC-P42X2

                                        Try it! It's just past 24 months, Panasonic generally like to keep customers "in the brand" and will often replace the TV or repair it for free.
                                        Last edited by tom66; 11-12-2012, 03:00 PM.
                                        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

                                        • IamCanadian
                                          Senior Member
                                          • Nov 2012
                                          • 119
                                          • Canada

                                          #40
                                          Re: Panasonic TC-P42X2

                                          Did a little more poking around, When the the SN board is connected (it is not shorted) I get an instant 5v on the sos4 it seems like as soon as their is a load on the vsus the psu just shuts down.

                                          I may be reaching but I just have a feeling that the problem is in the ps.

                                          Comment

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