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Problem with vizio plasma tv vizio p50hdtv10a

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    Problem with vizio plasma tv vizio p50hdtv10a

    Hello and thank you for helping.Let me break down the story best i can.I received an old Vizio plasma 50 inch tv (p50hdtv10a) 2007.It worked fine only issue was that it would solarize after 45 mins with a fan behind it and 24 mins with out a fan.I worked on computers for many years so i figured okay maybe its dusty or heatsink needs a fresh shot of paste.I looked up online to check what the problem could be.If it had solarization with menu screen selected also being distorted its two things.The control board or main video board.I took it all apart and found the control board or tcon board.I noticed it had no heat sink.I tried mounting one on with yarn.When i assembled everything i got no picture.

    The following things happend. I reconnected the ribbon cables and power cables.Tv makes that click sound and now i got a soft glow picture but with no on screen display but would make a faint flash like glow when selecting inputs.I checked all my connections again and noticed the Tcon board has an led code.The code D2(off) D3(on) D4(on) and D5(on).I unplugged everything this time.It did it again ,same faint glow.I tested audio and audio would play but then cut out.My brother who is better in electronics told me it seems like something is shorting out.Something is preventing the signal.I then came to realize i had connected the LVDS cable wrong.So i flipped it around but now the tv doesnt make that click sound when i plug the ac cord.I look at the front of my tv and in the bottom right where its normally amber and then green when on is just a solid green.

    Anyone know if i boned my set beyond repair.I hate the fact i finally found out i just needed a t-con board and thats it.It pretty much worked before i decided to take shit apart.

    #2
    Re: Problem with vizio plasma tv vizio p50hdtv10a

    I was able to get power back on the tv.I had the LVDS cable connected wrong.I changed out the tcon board and still getting solarization after 35 mins of use. The day before that with the old Tcon board i used a large 20 inch box fan and outside temps were 61F. It was blowing cold air and it was good up to 2hrs plus.Im not sure if longer as i fell asleep and turned off the set.I remember it looking fine.I also noticed that behind the tv it makes a strange sound.The best i can describe is a small fridge sound. The pictures shows the outline where i put the fan and also the screen of the solarization.

    I'm aware now that my LVDS cable was connected wrong.If anyone as a problem with a blank screen or dim flash screen make sure you put the LVDS cable back correctly.Also the green screen for those that get this problem.Make sure to seat the LVDS cable in all the way.That fixed my green issue.

    So what im asking help for is pretty much what can be overheating? I changed out the Tcon board. There's not a lot of distortion but the menu does get distorted also. If you see in my picture where i drew a red outline , thats where i had my fan.The tv lasted 2 plus hours during a 61F morning. Is it something in the section overheating? What else can it be other than the tcon board?

    Also for those that get lots of ghosting use the noise reduction and set to zero .
    Attached Files
    Last edited by kittydeathstrike; 08-23-2016, 07:54 PM.

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      #3
      Re: Problem with vizio plasma tv vizio p50hdtv10a

      Is there some like rule against helping me? I seen other psr get replies in minutes. I've had this thread for days now.

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        #4
        Re: Problem with vizio plasma tv vizio p50hdtv10a

        Since the problem seems to come with heat accumulation use a hair dryer to speed up the process by heating each board one at a time. Then we can go from there.

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          #5
          Re: Problem with vizio plasma tv vizio p50hdtv10a

          Okay , what setting should I use? Should I use a barrier between the air and the components? Like a towel?

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            #6
            Re: Problem with vizio plasma tv vizio p50hdtv10a

            i usually use high heat too warm each board and see if you see the fault change. just heat the whole board first untill you narrow down which board it is, then we can narrow the area down even further.Its hard to say how long too heat the board for though but i guess about 3 mins moving the heat all over the board not too close though.
            Last edited by vinceroger69; 08-27-2016, 04:38 AM.

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