The NEW Build Your Own Arcade Controls
Main => Monitor/Video Forum => Topic started by: Yeltsew7 on April 14, 2014, 08:14:29 pm
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Today I broke open a VGA (15 pin D-SUB) cable and tested the pinouts. I tested continuity to each wire from each pin. What I found didn't match up with any of the pinouts I've seen on the Internet. It is a Belkin cable that I've had for a while, and it's always worked for me.
Inside the cable, there are 11 wires as well as the wrapping that goes to the shield. The is a fat blue, a fat red, a fat green, a skinny red, a skinny blue, a skinny green, a skinny black, a skinny white, a skinny yellow, a skinny orange and a skinny brown. http://www.theavguide.co.uk/AdvHTML_Upload/vgaplug3.jpg (http://www.theavguide.co.uk/AdvHTML_Upload/vgaplug3.jpg) is what I've been using for a pinout, as well as some things I've seen on the forums.
I numbered the pins 1-15, with the fat side up. On the top row, 1-5 from left to right. In the middle, 6-10 from left to right. On the bottom, 11-15 from left to right.
I will post pictures, but until then I will write it out here.
FAT RED -> PIN 6
FAT BLUE -> PIN 8
FAT GREEN -> PIN 7 _AND_ 2 I got continuity from both of these pins. Not sure if there's an issue with my cable or if this is right.
SKINNY RED -> PIN 14
SKINNY BLUE -> PIN 4
SKINNY GREEN -> PIN 10
SKINNY BLACK -> PIN 11
SKINNY WHITE -> PIN 5
SKINNY YELLOW -> PIN 15
SKINNY ORANGE -> PIN 13
SKINNY BROWN -> PIN 12
Is this just a bad cable? If so, are there any cables that you recommend? I am looking to build an RGB to SCART adapter to go to the transcoder that Rob recommends.
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Pins 2 and 7 are green and green ground. Do you mean there is continuity between those two? That would cause you problems.
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No, I have continuity between the big green wire and pin 2, and continuity between the big green wire and pin 7. I made a little diagram. It shows how I numbered the pins, and each wire and what pins it goes to.
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I think we are having a misunderstanding in terms of how we're wording things. I can't figure out what you mean. Take a look at your last post. If there is continuity between the big green wire and pin 2, and there is continuity between the big green wire and pin 7, then you can't not have continuity between pin 2 and pin 7. I don't know if that's what you meant though.
The three big wires are probably shielded wires for the red, green and blue signals, with the center conductor carrying a color signal and the shielding grounded. Make sure you have these wires properly stripped with both the shielding and the center conductor accessible and separated.
(http://www.tdpri.com/forum/attachments/tele-home-depot/28234d1246592029-shielded-single-conductor-wire-lead-jpg-jpeg)
I think that's why you're missing pins 1 and 3, and why you're getting strange readings on pin 2. It is normal to be missing pin 9. It's an optional connection that sometimes carries +5v, but often isn't used.
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If there is continuity between the big green wire and pin 2, and there is continuity between the green wire and pin 7, then you can't not have continuity between pin 2 and pin 7.
Oh yeah, I wasn't thinking about that.
I'll take a look to see about the big wires and if there is another cable inside of them.
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Did you get this solved?
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Why yes, I did!
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Well..... what was the outcome?
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there were other wires inside of the thick wires, which carried the RGB signals
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:cheers: