Question about Symphonic ST420FF 20" TV

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No picture I have a 2003 symphonic wf2703 that was operating with a full picture but had a few horizontal lines through the top of the screen. Now there is no picture at all just a black screen with a single line through the center, horizontally. Any suggestions?

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Hi

You have defective Vertical output IC. This parts need to replaced to back to normal.

Thanks1

Posted on Dec 05, 2008

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Screen has gone grey and has fine horizontal lines on entire screen. Blue screen is out.


Either the screen voltage to picture tube is more than normal, or the video processor IC has damaged. There is an other possibility that there is no voltage at the video output card, plugged on to the neck of the picture tube. Anyway, your set need a through checkup, and the work is somewhat skilled one. Just check this site. Soemtimes you might get some details about this fault. The fault is called vertical retrace lines. Thin horizontal lines all across the screen with an inch apart. One among the posts published in the following site have details about this fault.
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Verticle lines appearing near top. Reminiscent of more extensive problem a few years ago that repair man said were related to electronic equipment used nearby such as vacuum cleaner. He fixed it with...


Case 1:
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Case 2:
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Case 3:
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If none of these cases match what you see, try a more detailed description of the lines and I'll give it another shot.

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