Question about Philips Magnavox 27MS343S 27" TV

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Model 42mf231d/17 42" plasma

3/4 of the screen is black and the top is perfect clear picture
tv is about 15 mo old and never had a problem

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  • gc51chief Jul 11, 2008

    similar problem with picture and now just black screen with sound...still researching for possible cause and solutions

  • Anonymous Jul 12, 2008

    At first the screen was half black then it went all the way black and now no pictures.



    no steps have been taken. looking for solution.

  • stmetcalf Aug 08, 2008

    Same thing happened to me just today. All of the sudden, the screen on my Magnavox (42mf231d) plasma went black. I still have sound, but no picture (and no on-screen 'indicators' such as volume, menus, and the like). This TV is just over two years old and I don't want to think about replacing it!! Any help would be appreciated!!

  • Anonymous Jan 16, 2009

    My Magnavox 42mf231d had the same problem--no picture but plenty of sound. Shop quoted me $834 to repair. Had another set just like mine in the shop with the same problem. Thanks, Magnavox.

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If the loss of picture is either on top half or bottom half of screen. there are y buffer boards that go from top to bottom on left side of screen when looking at back that control those sections. when there is loss of half of picture then buffer associated with that area would be at fault and would need to be replaced. when i see a degrading symptom such as loss of picture on top half or bottom half leading to no picture issue normally you would check heat syncs on y sustain board and if not heating up after a few minutes of being turned on would recommend replacing y main and both y upper and lower y buffer boards as they complete a circuit

Posted on Aug 20, 2008

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