VGA focus problem

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clockbroke

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Oct 30, 2007
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Hello all.

I just did an install of a VGA setup in a theater. To make it's use more flexible, I put an input on the stage for a presenter, and one in the booth for operation of a show tech, with an A/B switch for input selection. I'm quite well versed in VGA/LCD projector setup, and am skilled with cable soldering. VGA cable making is a bit new to me though, so I can't figure out what the following problem is:

From the stage, the signal is great, but from the booth, the focus is off, like a ghosting image. The cable run is about 100ft, but I have run temporary cables in this same room of 80+ feet with no issue. Is there cable interference? Is the jump from 80 feet to 100 feet responsible? Could it be a cable assembly issue?

I had to snip the VGA end off to run the wire through a wall that was tighter than expected, so I reassembled it with a barrier strip rather than soldering (for ease of replacement). All of the wires are clearly color coded, so It seemed a simple operation. Where did I go wrong?

Thanks!
 

cwwozniak

Chuck
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Joined
Nov 28, 2005
Messages
68,733
Did you test this particular 100 foot extension cable before cutting and splicing? A cheap or poorly made cable could be the problem.

If you are pretty sure that the cable was good before you cut it, did you reconnect the individual shielding over the red, green and blue video lines? If the cable had an overall shield, did you connect it back together as well?

EDIT: Before I forget, welcome to TSG.
 
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