Question about Televison & Video
with the indulgence of Ginko, may I offer alternatives to the cable replacement...
Try using another manner of injecting the PC's video signal into the projector other than what normally is used. If you are using now DVI, then use standard VGA, S-Video or even composite R-G-B or the plain yellow RCA Video IN if available from your PC and likewise with the Optoma EP771.
To my knowledge, white line(s) is a result of oscillation or signal bleedover of some sort in the video signal path (which includes the cable as Ginko has suggested). It is also possible of noise feeding back to the video processor/amplifier. Most can be corrected by additional shielding and/or putting capacitors in inputs or outputs pin (to the ground), but this has to be a case of winging it and requires a pretty good knowledge of RF and digital electronics components and circuitry.
If you are using a laptop (and even a desktop) try putting some distance between the PC and the projector. In some instances, using a common power strip with polarized plugs also helps. Some electronic lamps have also been known to cause some sort of interference as well as other electrical devices (including a genset).
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.
Posted on Apr 26, 2008
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Posted on Jan 02, 2017
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