Panasonic TC-P42G10 Plasma - Seven red blinks Dead No power

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • smartjohn
    Senior Member
    • Feb 2013
    • 116
    • USA

    #81
    Re: Panasonic TC-P42G10 Plasma - Seven red blinks Dead No power

    Ok guys, I spoke too soon! The set is working but after attaching a better signal, I am getting bad scan lines. I tried reseating all the buffer board ribbons and it helped some, but I still have at least 9 horizontal blank scan lines and two wider white bars.. The picture here is an ad with a uniform white background (not gray). I also have the dreaded vertical rose / pink line in the exact center that extends almost the entire height of the screen..

    This image is not the full 1080p height so on a full image the pink line drops about 2 inches from the top center.

    Help!! I need to sell the sucker but can't until it's fixed.. Thanks Guys!!
    Attached Files

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #82
      Re: Panasonic TC-P42G10 Plasma - Seven red blinks Dead No power

      The vertical line may be a bad plasma panel.

      However, the horizontal lines are a cable problem. All you need to do is reseat them. (WITH POWER OFF.) It's extremely difficult to get it "just right", but it is possible.
      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

      • smartjohn
        Senior Member
        • Feb 2013
        • 116
        • USA

        #83
        Re: Panasonic TC-P42G10 Plasma - Seven red blinks Dead No power

        Originally posted by tom66
        The vertical line may be a bad plasma panel.

        However, the horizontal lines are a cable problem. All you need to do is reseat them. (WITH POWER OFF.) It's extremely difficult to get it "just right", but it is possible.
        Wow, not what i wanted to hear on the red line!! Could this be caused by anything else? just hoping! JS

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #84
          Re: Panasonic TC-P42G10 Plasma - Seven red blinks Dead No power

          Usually it's the panel sadly :/ The ICs that drive it can become defective, but they are bonded to the panel and are not replaceable. This is why I always ask the seller if they saw any lines before it failed... (most are honest.)
          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

          • 3bbe
            New Member
            • Feb 2017
            • 2
            • Denmark

            #85
            Re: Panasonic TC-P42G10 Plasma - Seven red blinks Dead No power

            Old thread, I know. But here goes:
            My TX-P50V10 started shutting down giving off a seven blink code after haveng been powered on for about 30 mins.
            So I got a new used pair of SU/SD off eBay - allegedly from a set with a cracked screen.
            However, after I installed them and powered the set on, it powered off right away.
            I found a short circuit between GND and 5V_F_B (Vout of IC725) on the SC board. Turned out to be a shorted out inverter (IC564). After replacing it, I'm able to run the set without the SU/SD (buffer) boards connected (with SC50 shorted), but not with the SU/SD boards connected. It runs very noisy. I don't dare connect the buffer boards, I got from eBay as it seems they made the problem worse.

            My question is: Has anybody had the same symptom? TV shutting down (with the seven blinks) after running for a while... If so, what turned out to be the problem?
            Also: Can a worn/damaged buffer board damage the SC board? (I assume the opposite is possible).

            I measured all voltages on the SC board Vset was off by 4 V, which I corrected.
            All voltages measure fine now, and none of the power transistors/diodes are shorted.
            My suspicion is that the error is caused by a voltage drift in the error detection circuit.
            I have ordered new buffer IC's for the buffer boards, so I can rebuild them.
            But I'd like to be quite certain that I have caught any error on the SC board, that could potentially destroy the buffer boards, before reinstalling them.

            Does anybody have advice on what to look for?

            Long post, I know, but I figured I might just put it all on the table to start with.

            Thanks in advance,
            Cheers.

            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
            • 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
            • badcappo
              Dead Panasonic Viera TX-P65STW50 Plasma TV
              by badcappo
              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 😀...
              11-24-2024, 11:27 AM
            • nick31
              Panasonic Plasma ST50 TC-P55ST50 P55ST50 8 blinks
              by nick31
              Hello,
              My Oct 2012 panny plasma quit working yesterday.
              It was on when it happened. It let out a bit of burned plastic/circuit board smell. I was not able to find any burned parts though.
              Now it produces 8 blinks. According to the repair manual, that points to SS/SS2 board(s).
              I completed the steps in the guide: unplugged SS33, the TV turned on with a black screen, no blinking codes. Then I checked the continuity between pins 1 and 2 of the connectors SS52, SS54-SS57. The continuity is ok in all of them. Guide suggests to replace SS/SS2 boards so I placed an order...
              04-21-2021, 09:56 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
            • Loading...
            • No more items.
            Working...