Question about Proton MM2701VT 27" TV

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We turn on our tv and it makes cricket noise, picture shows up for few seconds then screen goes black does this everytime we have a plasma tv

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  • samanthabarn Sep 12, 2010

    when you turn on the tv,comes on for few seconds with cricket sound then goes black and cricket sound is gone too. We still have tv sound but no picture.

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  • Proton Master
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Look for Bad Capacitors on the power supply board, they will be vented,swollen or puffed up on Top 220uf 10v 330uf 10 2200uf 10v 3300uf 10 1000uf 16v, these are the most common capacitors that go bad.

Posted on Sep 12, 2010

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  • Master
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Hi,

Does you hear the sound / noise ? or after few seconds you could see only blinks?Is there any sequence of the blinks? If yes, kindly mention the same.

Thanks!!

Posted on Sep 12, 2010

  • taran_2005
    taran_2005 Sep 12, 2010

    Thanks for your response!!

    I was intially thinking it was the Y-main board, but it's ODD that the picture is present for 30 seconds, THEN DISAPPEARS.



    Y-main boards Blow up and die, they don't make the picture go black....



    You may have an issue with the Video board, they would cause the symptoms you have....



    So let's check it further.



    When your picture goes black, I'd like you to access the TV's menu first and see if it displays the menu or not. If it does display the menu, then we KNOW the problem is the Video board 100%.

    If it doesn't display the menu, then we have to check this next.

    Turn off the lights in the room, get it dark. The plasma panel GLOWS if the Y-Main is working correctly, and it's pitch black when the Y-main is bad.



    But....



    There is another board called the Z-sus board that controls the brightness of the picture.

    If the Z-sus is failing, you will still have a picture showing up on the screen, but you will have a dark distorted-looking picture showing up, and it will also distort the menu too.



    So, bring up the menu.

    If the menu is clear -- it's the Video board.

    If the menu is distorted/dark -- it's the Zsus board

    If the menu is missing, but the display GLOWS -- it's the Video board or the Logic board.

    If the display does NOT GLOW -- It's the Y-main board.



    Check it carefully, then get back with me with your results, OK!!


    Let me know,once done.

    Hope i helped you.

    Thanks for using ' Fixya ' and have a nice day!!

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