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Samsung PN42D450A2D No Picture

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    #1

    Samsung PN42D450A2D No Picture

    First there was a clicking sound that the TV was making coming from the power supply or the T-Con board. So I replaced the Power supply and it was still doing it. So I put the old one back in and replaced the T-Con board and it stopped so I thought that fixed it. It makes plays the chime like its coming on but the screen remains Black with no picture or backlight.
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    Last edited by Gadjet; 01-18-2015, 03:06 PM.
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    #2
    Re: Samsung PN42D450A2D No Picture

    check the fuse on the xsus board. its a surface mount or pico type probally should be designated on the board by the prefix f. could be something out on the vs or va voltages as well. had a 52 plasma Sammy in here the other day wouldn't show a pic but sound was good, fuse on the xsus had opened. it used a small agc type fuse though in a holder.

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      #3
      Re: Samsung PN42D450A2D No Picture

      I replaced the xsus board and no change black screen no backlight any other suggestions?

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        #4
        Re: Samsung PN42D450A2D No Picture

        First suggestion, as I've mentioned to others, is to stop replacing parts until a thorough diagnosis has been performed...unless you want to continue wasting money. These Samsungs are all over the forum, and they normally have Y-Main or X-main issues when the "no picture" fault occurs. Do you have a digital multimeter?
        Last edited by capkid; 02-14-2015, 04:19 PM.
        LG Plasma Mal-Discharge Correction Service

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          #5
          Re: Samsung PN42D450A2D No Picture

          I just happened to have all the parts here from a tv with a broken screen, can't find the y main though. However I do have a multimeter.

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            #6
            Re: Samsung PN42D450A2D No Picture

            I'm a beginner, but I have a smiliar TV as you, with a similar issue. I do, however, recommend checking through my thread, as there are many great suggestions and tests listed within it. Hopefully we can both get our TV's back to normal.

            https://www.badcaps.net/forum/showthread.php?t=44057

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              #7
              Re: Samsung PN42D450A2D No Picture

              I'd pull the X-main and Y-main to test the components on the heatsinks for shorts. This thread might be useful:
              https://www.badcaps.net/forum/showth...t=Ns-50P650A11. There are some instructions in post #10 if you need them.
              LG Plasma Mal-Discharge Correction Service

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