Question about Samsung SyncMaster 204B 20.1" LCD Monitor

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Horizontal line Samsung has agreed that this kind of horizontal is a fatal flaw that cannot be repaired, so the only solution is a replacement. However, this is a discontinued unit, and they say they can find none is stock and want me to accept a refurbished unit or wait until they "find" a new one "sometime in December." After reading a report here of someone having two of these monitors have the same problem, I am thinking there is either a design flaw or a mistake in production that has affected a number of monitors. This was very valualble information for me, because I now realize that I would be better off getting a refund and looking for another model. Too bad, because the quality is otherwise outstanding. Butchy

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Re: Horizontal line

A horizontal line means that the verticle deflection circuit is not operating. Take it to a TV repair shop this is not a difficult fix for a tv tech

Posted on Jun 20, 2008

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Appreciate the "Ask Me".

I am assuming that you have more than just familiarity with electronic components and circuitry, the use of a DVM and a soldering iron. Further, that you have access to a service manual.

Width problem is basically insufficient horizontal deflection, then analysis would have to be in the horizontal section. Areas to initially focus on:
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  2. 110 V peak to peak at collector of Q403, if yes check Q 402 & 404 as well as T401;
  3. other components that affect the horizontal size are:
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  • Q 405, 406, 407 & 408;
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Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

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