Question about Sony FD Trinitron WEGA KV-27FS100 27" TV

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Green screen with almost horizontal zigzag lines

When I power on my KV-27FS100 I find green screen with almost horizontal zigzag lines. If I turn the tv off/on I see bright horizontal beam and within seconds whole screen turns to green with whiter lines. If I slap on top-left or top-right side picture comes perfectly and stays as long as I keep the tv on. As soon as I turn off the tv and turn on after 10-30 minutes , same problem happens. Also when the picture is ok, I see the right side color is distorted. What could be the problem?

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  • fazil finn Sep 08, 2006

    Thanks jomaru for your help. I checked the complete chassis for loose conections for more than 2 hours but couldnt find any loose connection. Where should I look for the problem?



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Is good that you hit it and it reacts,very likely you have loose conections in different places but for the distorted picture you need to check the horizontal driver transformer and flyback after that is corrected you need to check the complete chassis for loose conections.Take your time.Good luck.

Posted on Sep 07, 2006

  • Omar Urrutia
    Omar Urrutia Sep 14, 2006

    Loose Conections are very easy to find if you know what they look like,some are hard to find even to trained technicians.The symptoms point to the Horizontal drive circuit but I would check everything after I have found and corrected the problem.The simple fact that it reacts when you hit it and the pix comes or goes as you do it tell me something is loose,I suggest you call someone qualified to find it and resoldered the board,the problem is not visible from the top of the main board and you need to see close to the soldering points.Be safe call someone should not be too expensive.



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