Panasonic TX-37LX85P blink 3 times

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  • rtstorm
    Badcaps Veteran
    • Feb 2012
    • 971
    • Croatia

    #121
    Re: Panasonic TX-37LX85P blink 3 times

    3x 1h45sf
    5x 1h45sk
    ...the quieter you become the more you are able to hear...

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #122
      Re: Panasonic TX-37LX85P blink 3 times

      Ah "SF" vs "SK" probably a date code/factory lot number but the "8447L" is the same code for all of them?

      Actually thinking about it, they really should have the same factory lot code unless they put the parts on at a different time... so perhaps they've been replaced? Any signs of this being done?
      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

        #123
        Re: Panasonic TX-37LX85P blink 3 times

        yes the number 8447L is on all of them. I think they are stock, no sign of soldering.
        ...the quieter you become the more you are able to hear...

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #124
          Re: Panasonic TX-37LX85P blink 3 times

          I am curious on the voltage readings on the two fuses on the inverter board, what do you read on both ends of the 1A fuse, you only show the reading on one end shown on post 115.
          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

          • rtstorm
            Badcaps Veteran
            • Feb 2012
            • 971
            • Croatia

            #125
            Re: Panasonic TX-37LX85P blink 3 times

            24V on both end of 1V and 10A fuse
            ...the quieter you become the more you are able to hear...

            Comment

            • rtstorm
              Badcaps Veteran
              • Feb 2012
              • 971
              • Croatia

              #126
              Re: Panasonic TX-37LX85P blink 3 times

              can i replace all of them? I think i can found them in my local electronic store, i see they have on website. It is saying FDD 8447L on website, i think this is it.

              Is it ok to replace them with one type? What is the difference between Sk and SF?
              ...the quieter you become the more you are able to hear...

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #127
                Re: Panasonic TX-37LX85P blink 3 times

                SK & SF is factory lot code.
                Only important thing is size/shape and 8447L.
                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

                  #128
                  Re: Panasonic TX-37LX85P blink 3 times

                  I replace all 8 voltage regulators and TV work, thank you very mutch.
                  I am so happy,

                  BR
                  ...the quieter you become the more you are able to hear...

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #129
                    Re: Panasonic TX-37LX85P blink 3 times

                    Thanks for the feedback, glad to hear you fixed it... they are FETs though .
                    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

                    • zeko
                      Member
                      • Jan 2014
                      • 30
                      • Albanien

                      #130
                      Re: Panasonic TX-37LX85P blink 3 times

                      Hi, in my Panasonic LCD the power supply is broken TNP8EPL90 (TXN/PL10NVA). The 5.6V Stby is OK. I have P2 connector bridges and have no 25V, 17V and 9V.
                      After P2 bridge raley works. D854 in secondary has 5.2V.
                      IC801 has no VCC on pin 8 and not out on pin 7, pin 3 is at 2.5V.
                      IC802 MP2A5077 (C5HAZZZ00012) has on Pin23 320V, pin 10 has unstable voltage.

                      Please help

                      Comment

                      • zeko
                        Member
                        • Jan 2014
                        • 30
                        • Albanien

                        #131
                        Re: Panasonic TX-37LX85P blink 3 times

                        Hi, in my Panasonic LCD the power supply does not work TNP8EPL90 (TXN/PL10NVA). The 5.6V Stby is OK. I have P2 connector bridges and have no 25V, 17V and 9V.
                        After P2 bridge raley works. D854 in secondary has 5.2V.
                        IC801 5501A (C0DABZZ00012) has no VCC on pin 8 and not out on pin 7, pin 3 is at 2.5V.
                        IC802 MP2A5077 (C5HAZZZ00012) has on Pin23 320V, pin 10 has unstable voltage.

                        Please help

                        Comment

                        • Ton Techneut
                          New Member
                          • Mar 2014
                          • 2
                          • Nederland

                          #132
                          Re: Panasonic TX-37LX85P blink 3 times

                          Hallo Zeko,

                          Ik heb precies hetzelfde!
                          Heb jij al de oplossing?

                          Comment

                          • Ton Techneut
                            New Member
                            • Mar 2014
                            • 2
                            • Nederland

                            #133
                            Re: Panasonic TX-37LX85P blink 3 times

                            Hallo Zeko,

                            Heb hetzelfde probleem!
                            Heb jij al een oplossing?

                            Comment

                            • husseinkapasi
                              New Member
                              • Oct 2015
                              • 6
                              • India

                              #134
                              Re: Panasonic TX-37LX85P blink 3 times

                              Hi i have a Panasonic Plasma TV TH-42PV8H and it gives 3 red blinks.

                              I went through the blink code chart where it says 3.3V sub is missing problem with A-board.

                              so i decided to trouble shoot A- board using the service manual (see attached) and learned that there is an IC9003 which senses +3.3V Sub and when it does not sense it then it gives 3 Red blinks.

                              Please see attached service manual of TH-42PV8P which is very similar to my model TH-42PV8H.

                              Can you please tell me the pin numbers on IC9003 which sense the +3.3V(P) DET and +3.3V(STB)

                              From the schematic (see attached) I found out that Pin number 6 of the IC9003 should receive +3.3V but when i checked with multi-meter it doesn't get that voltage, all the other pins like pin 23 etc get the +3.3V.

                              Also +3.3V(P) DET is supplied to IC9003 from IC9805. Basically IC9805 converts +15V to 3.3V and supplies it to the IC9003.
                              So when i checked IC9805 with multi meter on pin 25 to confirm whether it gives out +3.3V, i found out that it doesnt give out +3.3V, so i checked on pin23 which is +15V VCC In IC9085, i realised there was no input 15V on pin 23 thats why the IC9805 was not giving out 3.3V.

                              So i request help from you experts that where should the 15V come to the IC9805, i am unable to trace it. I used a jumper to provide 15V straight from power supply but then i get 1 time Red blink.

                              If i used a jumper to feed +3.3V to pin 6 of IC9003 then i get 4 red blink.
                              Attached Files

                              Comment

                              • Mauro
                                New Member
                                • Dec 2015
                                • 1
                                • Argentina

                                #135
                                Re: Panasonic TX-37LX85P blink 3 times

                                Hi, I also have the same error message on a Panasonic plasma, it's a 2013 model called TC-P65VT60.

                                Any help will be VERY appreciated.

                                Comment

                                • BookWormStud
                                  Member
                                  • Aug 2017
                                  • 17
                                  • India

                                  #136
                                  Re: Panasonic TX-37LX85P blink 3 times

                                  Originally posted by rtstorm
                                  i measured the voltages, please have a look at them. I think that something is wrong here.
                                  Did you check these in Stand By?

                                  Comment

                                  • Roders5
                                    New Member
                                    • Feb 2021
                                    • 1
                                    • UK

                                    #137
                                    Re: Panasonic TX-37LX85P blink 3 times

                                    Originally posted by BookWormStud
                                    Did you check these in Stand By?
                                    I have one of these with 3 blink code. I have no 9v at pins 11-12 of P2 of P board. Is the 9v supplied from ic854 or is it supplied from the A board. If it is from the A board can you advise what componant may be at fault.

                                    Comment

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