Does this mean a short? Panasonic TV's

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Fixing222
    Senior Member
    • May 2017
    • 67
    • --

    #1

    Does this mean a short? Panasonic TV's

    I received 14 blinks on Panasonic TV vestel board I tested the power board to main board socket on the powerboard side first on the mode as pictured attached (multimeter mode) and it beeps shortly then goes away on the last pin all the rest no beep

    However when testing the main board at the point where the wire comes from the powerboard. As pictured attached


    I uplugged the connection wire so it wasn't connected to the powerboard and just testeed the socket of the main board pins, the last pin arrowed is a constant beep does this mean the main board has a short and needs replaced as I heard 14 blinks inicates the aboard or main board??
    Set has sound and black light just no image except backlight on
    Schematic attached also incase
    Attached Files
    Last edited by Fixing222; 08-05-2019, 07:50 PM.
  • diif
    Badcaps Legend
    • Feb 2014
    • 6978
    • England

    #2
    Re: Does this mean a short? Panasonic TV's

    Use resistance mode not continuity mode. It's hard to tell from your photo but there are pins that are connected to ground on the connector.

    Is there a tcon ? Have you measured the voltage both sides of its fuse ?

    Comment

    • Fixing222
      Senior Member
      • May 2017
      • 67
      • --

      #3
      Re: Does this mean a short? Panasonic TV's

      Originally posted by diif
      Use resistance mode not continuity mode. It's hard to tell from your photo but there are pins that are connected to ground on the connector.

      Is there a tcon ? Have you measured the voltage both sides of its fuse ?
      Thank you for replying,

      Edit connection was loose will try now.
      In resistance measuring at the pin I don't get that beep thank you for helping me on that also
      11.84v each side of T-con fuse is meant to be 12.12 or it can be lower,
      I wonder if it's meant to be 12.12 and is slightly low
      Attached Files
      Last edited by Fixing222; 08-06-2019, 02:37 AM.

      Comment

      • diif
        Badcaps Legend
        • Feb 2014
        • 6978
        • England

        #4
        Re: Does this mean a short? Panasonic TV's

        That voltage is fine.

        Comment

        • Fixing222
          Senior Member
          • May 2017
          • 67
          • --

          #5
          Re: Does this mean a short? Panasonic TV's

          Originally posted by diif
          That voltage is fine.
          Ok thanks for helping me troubleshoot that I think as there cheap I will get a T-con and a other main board and hopefully it's one of these

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: Does this mean a short? Panasonic TV's

            .
            Last edited by budm; 08-06-2019, 09:48 AM.
            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

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Does this mean a short? Panasonic TV's

              What do you get if you have one ribbon cable between panel and the T-CON connected one at at time? What Voltages do you get on the T-CON board test points?
              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

              • Fixing222
                Senior Member
                • May 2017
                • 67
                • --

                #8
                Re: Does this mean a short? Panasonic TV's

                Originally posted by budm
                What do you get if you have one ribbon cable between panel and the T-CON connected one at at time? What Voltages do you get on the T-CON board test points?
                Unfortunately I can only see VCC on there from the test points you mentioned but I will check

                Comment

                Related Topics

                Collapse

                • DynaxSC
                  Extreme High Current & Low Voltage Short Killer ??
                  by DynaxSC
                  Hi Folks

                  I'm looking for a extreme high current short killer solution for a reasonable cost.

                  I have an LGA1700 motherboard (ASUS PRIME Z790-P WiFi) where I exchanged the LGA socket already 3 times, and every time after the socket exchange I get a short of power supply lines VCORE (V variable) and VCCIN_AUX (1.8V).
                  After taking off the socket, the shorts dissappear again.
                  The soldermask on the socket is already partially demaged from the heat, so I have reconstructed the soldermask by manually painting the missing soldermask parts with a very small top of a...
                  10-15-2024, 10:13 AM
                • Stephen
                  MacBook Pro 14" A2442 Short on PPBUS_AON but no short present when injecting voltage!
                  by Stephen
                  I check PPBUS_AON and there is a short present on the line, the computer shows a short when testing for short to ground, so when I inject voltage into the line, I get 0AMPS so no short is showing up. I have replaced a blown cap on this board that exploded and tested for the short and it is now removed. Any suggestions? I tested voltage at the line when the fuses are connected and I am getting 1.2 Volts at the line.
                  02-06-2025, 12:03 PM
                • Victor Moreira Silva
                  Acer Nitro 5 LA-L181p power LED turns on by 5 secs (Short on PCH rail?)
                  by Victor Moreira Silva
                  Hello everyone,

                  I'm trying to repair my old Acer Nitro 5 (AN517-54-55T5). I've already bought a new laptop, so this is more of a learning project. For the experience, with no high expectations of success.

                  Well, my decice specs are the following:

                  Model: Acer Nitro 5 AN517-54-55T5
                  CPU: Intel Core i5-11400H
                  GPU: NVIDIA GeForce GTX 1650
                  Motherboard: GH51G LA-L181P Rev:1c

                  The symptom:
                  When pressing the power button, the power LED lights up for about 5 seconds and then turns off. Initially, the issue was intermittent: sometimes...
                  05-26-2025, 10:49 AM
                • aaronkatrini
                  Help me find the short circuit on this WORKING Nvidia GTX1650
                  by aaronkatrini
                  Hi all,

                  Recently picked up this GTX1650 at a local flea market for a low price and wanted to use it on my secondary PC. I first tested the card and saw the fan spin for a split second and then nothing. Immediately I thought of a short circuit. Disassembled and found a shorted SMD capacitor, injected voltage into it (1V/4A) and two Mosfets got hot immediately (QN3103 & QN3107). Desoldered these Mosfets and the card turned back to life.

                  Bought replacements from Aliexpress and replaced them afterwards. Tried the card but still the saw the fan spin for a split second...
                  04-18-2024, 03:15 PM
                • Geeker007
                  9th Gen Dell Optiplex Micro PC motherboard repair: Short Circuit?
                  by Geeker007
                  Hi All, I have a 9th Gen Dell Optiplex micro PC motherboard which doesn't power on. When I connect the motherboard with power adapter, it goes into safe mode and turns off. So from info I have gathered online, it looks like there is a short circuit on the motherboard. So can you guys help me with figuring out the issue?

                  I am new to electronics repair, so my queries could be naive but I am ready to learn.

                  So I have a multimeter and a solder with me. But I can try to get a variable voltage power supply with a thermal camera as well. From what I seen online, best way is...
                  01-28-2025, 03:31 PM
                • Loading...
                • No more items.
                Working...