Question about ViewSonic VX2025wm 20.1" LCD Monitor

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Monitor has lines scrolling down while powere pluggeed into laptop where it is getting it's image from

"power lines" rolling on monitor

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Re: Monitor has lines scrolling down while powere...

One may try attaching RF filters to the video cable. These are usually formed-powdered iron rings or molded flat pieces that enclose over the cable, one on each end near the cable connectors. A plastic cable strap will hold these pieces in place. Or one could search for a video cable with the filters built-in by the manufacturer. Another "Technical" individual.

Posted on Feb 09, 2007

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Desktop PCs automatically seek an external monitor to output graphics to. Laptops default settings send the image to the internal monitor. You need to manually instruct the laptop to export the image to an external monitor.

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Monitor problem


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:
  1. 12V line and pin 29 of IC401;
  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:
  • IC201
  • Q 405, 406, 407 & 408;
  • D409
  • L401
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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