Posted: 2/5/2009 4:24:34 PM EDT
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I have an S-Video cable going from my video card to my HDTV.
Everything was working fine. One day I try to use it and it's black & white. Troubleshooting tips? I looked for bent pins but no luck there. |
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Quoted:
Video card took a shit. I use the DVI for going to my monitor. You mean just the S-Video out? Is it possible for just that part to take a dump? I was kinda thinking a cable issue but I don't have another to diagnose with. Edit: I guess I can pull this cable off and try it on something else. I'll give that a try in a bit. |
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one of the pins is bent This, or a wire in the cable broke, or the connector on either video card or T.V. S-Video puts the black and white (luma) on one wire, and the color(chroma) on another. That separation is part of processing an NTSC signal. |
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Meter might not tell the whole story. TV's have a circuit usually called a "color killer", that detects the level of chroma, and if it's too low, it puts the TV in black & white mode. Continuity doesn't mean it will carry RF well. Best bet is try another cable. Hmm, I don't have another cable. Do you know what resistance value I should check for? |
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For a short cable it should be the same as if you touch the leads together. But that doesn't mean a video signal will get through without loss.
You could try the cable using a different source (DVD player, camcorder, etc.) That would let you know if the TV was OK. ETA: They got S-video cables at grocery stores and Walmart now-a-days. |
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Quoted:
Quoted:
Meter might not tell the whole story. TV's have a circuit usually called a "color killer", that detects the level of chroma, and if it's too low, it puts the TV in black & white mode. Continuity doesn't mean it will carry RF well. Best bet is try another cable. Hmm, I don't have another cable. Do you know what resistance value I should check for? resistance should be zero. |
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Yes. It could be the connector on the video card. They see a lot of stress from unrelieved cables. Damn, I wish HDMI wasn't over $1/ft (on Monoprice, which I'm guessing is the cheapest source). I need a 25' cable so it looks like I'm gonna have to just eat the $33 + a few bucks for a DVI adapter. |