Dead Panasonic Viera TX-P65STW50 Plasma TV

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • badcappo
    Member
    • Jun 2018
    • 20
    • UK

    #1

    Dead Panasonic Viera TX-P65STW50 Plasma TV

    Hello, got a ST50 plasma TV for repair. No signs of life, not even blink codes. Opened it up to check the power supply, type MPF6914. Apparent issues from visual detection and measuring for shorts:
    Diode type G972s6 - D101 with a short
    Mosfet 06N90E - Q301 shorted
    Fuse T5AH 250V - F103 blown
    Diode D301 shorted
    Relay DG1U-17VDC II - RL001 blown

    I have not found a circuit diagram. Maybe someone here already dealt with a similar issue? Thanks for tips where else to check 😀

  • Davi.p
    Hobbist
    • Sep 2009
    • 4264
    • Italy - Milan

    #2
    Good picture of top and bottom of the board? Check preferably my sticky note on photos.. and maybe better to mark where the bad pieces are..

    Comment

    • badcappo
      Member
      • Jun 2018
      • 20
      • UK

      #3
      Parts in question and two pcb shots attached













      Attached Files

      Comment

      • badcappo
        Member
        • Jun 2018
        • 20
        • UK

        #4
        Anyone with more info ?

        Comment

        • Davi.p
          Hobbist
          • Sep 2009
          • 4264
          • Italy - Milan

          #5
          i wonder if you followed my.sticky note, because i'm unable to see photos on my cellphone..

          Comment

          Related Topics

          Collapse

          • jm1234
            Panasonic plasma TX-P42ST50 - 6 blinks
            by jm1234
            Hi,
            anyone able to provide the service manual for old plasma Panasonic TX-P42ST50E?
            It turns off almost immediately (0~5 seconds after pressing the on/off button) and starts flashing the red diode 6 times.
            I disconnected the left-hand side board (SC?, both the ribbon cable and the power cable to it) and also another ribbon going to bottom left board. Then the led signal is 8 flashes. According to service guide to another Panasonic plasma it would mean the left-hand side board is faulty. But I'm not sure it 100% applies to my model.
            I checked that board for any obvious faults...
            05-22-2024, 06:59 AM
          • stecos
            Panasonic Plasma main board repair (ST30 GT30 VT30 ST50 GT50 VT50),LED with 3 blincks
            by stecos
            Hi everyone!
            I happened several times, in the search for help from the web, to consult this very interesting forum.
            So I decided to sign up and I intend to participate actively by making available my knowledge and experience on the subject, I'm a new user but at the same time I'm old in the sense that I have 4 decades of experience in repairing and designing electronics but above all I'm a great passionate about the subject.

            Having said that I come to the gist of my post on the forum as the title suggests.
            For my passion for technology I'm now collecting several...
            11-28-2022, 11:39 AM
          • cloo
            Panasonic ZT60 plasma tv with strange behavior and 8 blink code
            by cloo
            I recently got my hands on a 60" Panasonic P60ZT60 plasma tv (european model) that has some strange issues along with an 8 blink code.
            It know this tv is getting old but it was once considered one of the best plasmas ever made, and i think it is still holds on to that even by todays standards.


            So, long story short. When i first got the tv it had a very bright washed out picture with very raised blacks in all picture modes and i couldn't find the cause in the picture setting menus.
            After doing a factory reset this problem was gone and the picture was back to...
            01-06-2025, 06:02 AM
          • Alicat
            Panasonic Plasma TH-50PZ85U No screen No blinks on red power light
            by Alicat
            Hello,

            Stopped by this site trying to fix my parents Panasonic Plasma TV.

            Model number is TH-50PZ85U

            Power comes on and the red power light stays on solid.

            Did a few checks like hold the power button on for 60 seconds, hold the - Volume while holding the menu button, no luck, still@ blank grey screen as the screen lights up very vague.

            I also hear a few clicks.

            I also think my parents said there was a thunderstorm and the TV failed after that.

            Section 6 in the service manual talks about power and no screen,...
            10-30-2024, 10:09 AM
          • Lintesir
            Panasonic P42S30 Plasma - Pink sparkles
            by Lintesir
            My parents' Panasonic P42S30 died recently, and they asked me to have a look at it. I was able to identify the SN-board as the culprit, as it was shorted. After removing Q401, Q402, Q421 and Q422 the short was gone, so I replaced these components and that got the TV working again. However, when testing the tv a bit, I noticed quite bad pinkish sparkles on some colors. For instance the greyish bar on this forum seems to trigger it quite badly. I made a fullscreen test picture with only that color, with the below result.

            There is about a 5cm high region at the top without any sparkles,...
            07-26-2024, 03:16 AM
          • Loading...
          • No more items.
          Working...