Panasonic TX-P37X20B

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • snipersquad100
    Badcaps Veteran
    • Nov 2013
    • 297
    • uk

    #41
    Re: Panasonic TX-P37X20B

    OMG those RJP30E4 ARE £5 EACH.

    Comment

    • Hombre
      Badcaps Veteran
      • Jul 2013
      • 231
      • Croatia

      #42
      Re: Panasonic TX-P37X20B

      http://www.utsource.net/RJP30E4.html

      Comment

      • snipersquad100
        Badcaps Veteran
        • Nov 2013
        • 297
        • uk

        #43
        Re: Panasonic TX-P37X20B

        Thank you Hombre, Im just hoping the P+P is not to expensive.

        Comment

        • tw2005
          Badcaps Legend
          • Oct 2011
          • 6458
          • Australia

          #44
          Re: Panasonic TX-P37X20B

          Originally posted by snipersquad100
          Thank you Hombre, Im just hoping the P+P is not to expensive.
          No it is not but slow going, 3 weeks to Aust.

          Comment

          • snipersquad100
            Badcaps Veteran
            • Nov 2013
            • 297
            • uk

            #45
            Re: Panasonic TX-P37X20B

            T.v. fixed after putting in the new"2n hand" ss board.
            The ss board should read open circuit "OL" across pin 1 and pin 3 and 1 & 4 of the ss11 scocket and on ss3 scocket you should read mega ohms across pin 1 and 3 and pin 1 and 5. I could of replaced the rjp30e4 chips x 4 but it was cheaper to get a 2nd hand ss board off ebay.
            I will remove these chips when I get time to verify that it is those chips and that the short goes.
            thanks to tw2005 for the help.

            Comment

            • tw2005
              Badcaps Legend
              • Oct 2011
              • 6458
              • Australia

              #46
              Re: Panasonic TX-P37X20B

              Sounds good, although it'll be megohms at SS11 just depends on the limits of the meter used.

              I reckon it has to be corrupted eeproms for the A board and the SS board failure must either cause the TV to shut down in such a way to corrupt them or they get spiked?

              It's a little uncanny you & I had A & SS failures at once. The SS would have to happen first, and 13 blinks must be right at the startup of the A board before it turns the PSU on. I've already proved IC9304 on that board caused SOS1

              Comment

              • Alastair E
                Chief Womble
                • Mar 2013
                • 1963
                • U.K.

                #47
                Re: Panasonic TX-P37X20B

                Hmm--Interesting.....

                A Panasonic 37C2B in Swansea with dodgy A board--two years ago, that was perfect condition low hours--very clean inside....

                Sounds Exactly like the one I currently have....

                It (If the same set, which is possible I guess) has Intermittent 8 Blink from cold, followed by occasional working with Psychodelic Picture for some seconds--until it goes 8 blink, then if tried again works Nearly faultlessly until turned off and left to go stone-cold....

                I say--Nearly faultlessly, this 5000 hour set has a VERY slight row of dots/dashes exact centre of picture about 5-6mm high,--that can only be seen on very dark/black picture, when looking pretty closely and when the brightness is turned up a little
                --Dont normally see it, and its present Only on the diagonal grey-scale wedges of the test-patterns, not on any of the primary colour screens either bright or dim....
                --This row of dashes is approximately one division of brightness higher than the usual greenish noise that Plasmas seem to have. It will completely vanish leaving a fully black screen when the brightness is turned down just one more division after the greenish noise has gone, and present on all inputs as well as DVB....
                Last edited by Alastair E; 01-23-2016, 12:35 PM.
                TELEFIX

                How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
                http://www.irf.com/technical-info/appnotes/an-1088.pdf
                PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

                Comment

                • tw2005
                  Badcaps Legend
                  • Oct 2011
                  • 6458
                  • Australia

                  #48
                  Re: Panasonic TX-P37X20B

                  Originally posted by Alastair E
                  Hmm--Interesting.....

                  A Panasonic 37C2B in Swansea with dodgy A board--two years ago, that was perfect condition low hours--very clean inside....

                  Sounds Exactly like the one I currently have....

                  It (If the same set, which is possible I guess) has Intermittent 8 Blink from cold, followed by occasional working with Psychodelic Picture for some seconds--until it goes 8 blink, then if tried again works Nearly faultlessly until turned off and left to go stone-cold....

                  I say--Nearly faultlessly, this 5000 hour set has a VERY slight row of dots/dashes exact centre of picture about 5-6mm high,--that can only be seen on very dark/black picture, when looking pretty closely and when the brightness is turned up a little
                  --Dont normally see it, and its present Only on the diagonal grey-scale wedges of the test-patterns, not on any of the primary colour screens either bright or dim....
                  --This row of dashes is approximately one division of brightness higher than the usual greenish noise that Plasmas seem to have. It will completely vanish leaving a fully black screen when the brightness is turned down just one more division after the greenish noise has gone, and present on all inputs as well as DVB....
                  Sounds like potentially dodgy A-board. Both the HD & FHD base models use the same blank PCB board and have similar issues with them like bad BGA solders from heat which is interesting.

                  I have a 50U20 which according to the sellerat the time had little use which was true, 2500hrs. I forget the exact fault but screen would blank out , then some weird error message, maybe 13 blinks as well.

                  So i had another board from NZ which was sent incorrectly, never tested but supposedly from new smashed TV (I suspected bullshit on that).

                  wacked that in , looked good for 15mins then as it got hot, flickering red and blue vertical bars along the bottom. I think that board had 3-4000hrs on it.

                  took a 3rd board from Sydney with about 6000hrs(blown SC) to get it running.

                  I do have a 42X20 and that TV was a basket case, also had corrosion or bluing on some of the ribbons that caused image issues and random faults initially as well.

                  Still have it and still working, gets used daily
                  Last edited by tw2005; 01-23-2016, 01:38 PM.

                  Comment

                  • Alastair E
                    Chief Womble
                    • Mar 2013
                    • 1963
                    • U.K.

                    #49
                    Re: Panasonic TX-P37X20B

                    Yup--Looks like dodgy A board. Ive monitored the SOS 8 point on the SS, that starts out at 5V, drops to 0 as it starts up then goes to 5V just as it shuts down.

                    --But if the A isn't supplying the correct info to the SS--I'll go SOS8 anyway....

                    Ive had the SS out and checked it for dry-joints, poor earth-lands etc and checked the tab-FCB connectors etc, Nothing amiss....

                    Looks to have a Very complicated combo chip under that heatsink on the 'A'--a Die component processor style and two other LSI type chips all on the same substrate....

                    Worryingly, the HDMI sockets seem to connect direct to this thing....
                    TELEFIX

                    How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
                    http://www.irf.com/technical-info/appnotes/an-1088.pdf
                    PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

                    Comment

                    Related Topics

                    Collapse

                    • Tynan Dill
                      Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
                      by Tynan Dill
                      I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

                      Upon bringing it home and plugging it up, it showed a standby light.

                      I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

                      The screen seems to blackout and stay black, but with a flashlight I can see the display.

                      With my Playstation 4 connected via HDMI, and running a game I can hear sound.

                      Assuming...
                      11-22-2024, 01:46 PM
                    • m1ch43lzm
                      HP Pavilion 15-eh Board DAG7HAMB8F0 - CPU throttling to 0.4GHz (PROCHOT_EXT) and black screen
                      by m1ch43lzm
                      Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
                      Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic...
                      05-12-2025, 08:37 PM
                    • sam_sam_sam
                      Panasonic switching power supply daughter board has two 27uf @ 50 volt capacitors which I do not keep in stock
                      by sam_sam_sam
                      I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow

                      This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board

                      After all of...
                      07-13-2024, 08:14 PM
                    • Biruslapio
                      Panasonic P50VT20B Plasma 12 Blinks, Power Supply or A-Board?
                      by Biruslapio
                      Hello, I've had this TV for 3 years, 2 years ago it stopped working signaling 12 Blinks, SOUND_SOS according to the service manual.

                      It has no VSUS or VDAT, and P15V has 1.0V instead, the same 15V goes to A board. F15V is ok and other main voltage rails.

                      It seems the power supply is defective, since unplugging D20 ribbon cable that goes from D-board to SC-board makes the behavior change, the TV stays on, there's no image nor VSUS, but 15V reads 2.4V, high enough to not trip the SOS 12 blinks, so it stays on, fans do not spin but I left it 2 hours, green led lit up...
                      02-16-2021, 09:44 PM
                    • mmischni
                      Panasonic Viera Plasma TH-42PX75U 7 Blinks/8 Blinks/burned P board?
                      by mmischni
                      Greetings friends,

                      I have a Panasonic TH-42PX75U manufactured in 2007. It has been trouble-free until recently. One evening I turned it on and it then powered back off and gave 7 blinks.

                      First a question about the blinks. Everyone only speaks of a single number of blinks. I noticed on my TV, it blinks one fewer times for the first group of blinks, then blinks the full number repeatedly. So for my first code in question, the TV switches off, blinks 6, then blinks 7 repeatedly. When I disconnected the SC board, the TV switches off, blinks 7, then blinks 8 repeatedly....
                      09-06-2017, 08:52 PM
                    • Loading...
                    • No more items.
                    Working...