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Homemade VGA to Component cable, CAT5e

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davelee1097

Guest
Hi I'm having trouble making one of the above cables, Basically I have a CAT5e cable in my wall for my TV and wanted to use it for a video cable for my Media centre PC but want 720p so a VGA cable is out of the question so I decided to make a VGA to component using this guide http://www.myhometheater.homestead.com/vgacable.html

But it doesn't work, any ideas?
 

hornydragon

Distinguished Member
a VGA to component cable will only work if PC can output component video YUV/YPbPr wont work with a standard VGA (RGBHV signal) why not PC to 1280x720 output and use VGA?
 
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Deleted member 30535

Guest
Do a search for a Baluns. IIRC someone had a similar problem and needed a pair of "Baluns" to negotiate the signal on and off the Cat5 cable.
 

SeanT

Distinguished Member
Yep, a VGA over Cat 5 kit will do the trick, try CPC on a budget.
 
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davelee1097

Guest
Yeah its really weird, I can't get a picture usually (Just a blue screen).
But if I use PowerStrip and create a custom 720p resolution I get a picture but its really green and wobbly.

Any Ideas?
 

SeanT

Distinguished Member
Yes, the cable isn't designed to carry video, you need a balun / sender to do it properly - just mine (and Mr I) tuppence.

Btw, you may get away with sending component (as long as the pc can output component, which is usually over a breakout cable into the svideo output of the graphics card, and not from the VGA socket), if you use one pair of wires for each signal/earth pair (ie. 3 pairs for red, green and blue (cpr, y, cpb) respectively), but probably not VGA because of impedance issues and it requiring 9 seperate wire connections to work properly (and you only have 8 wires in the cable)

P.P.S. really sorry for using nested brackets in a post!!!
 

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