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View Full Version : S-video 4 pin to 7 pin convertor?


Munna2002
25th June 2004, 18:29
Hi,

I used to have a Dell Laptop which had a 7 pin S-video output. I connected a variety of TVs using an adapter which connects to the 7 pin S-video on one end, and on the other end, there were three jacks. I could connect via component, composite and 4-pin S-video.

Now I have an IBM thinkpad t40p which has only a 4 pin S-video output. I would like to use this adapter still because I can connect my laptop to TVs without S-video via component/composite. However, it takes only 7 pin inputs. Is there a way to convert a 7 pin S-video (male) to a 4-pin S-video (male) to let me connect the adapter to the IBM laptop?

Any ideas on how to do this? Thanks!

:confused:

Asmodian
26th June 2004, 00:26
You actually need a powered video converter, the reason you could connect to composite or normal (4-pin) s-video with an adapter is because the extra 3 pins of the 7-pin s-video plug were actually giving the composite signal. Your new IBM laptop does not output a composite signal so you will need an s-video to composite converter (and I have never seen one that didn't require external power - or one that output on one of those 7-pin s-video plugs). I am not really sure how component plays into this but I bet you would also need to do some power-required signal conversion to get to component from s-video and your Dell laptop was also outputting a component signal.

These converters are not terribly expensive (~$20).

Munna2002
26th June 2004, 00:40
Thanks for the reply.

Is there a way to just convert 4 pin to 7 pin using a cable solution? A powered solution is not very portable. Having component is not terribly important as long as I am able to use the other two devices of 4-pin s-video or composite.

Any ideas?

Soulhunter
26th June 2004, 20:18
You mean something like this (http://www.hifi-regler.de/shop/hama/hama_42738-adapter_s-video_cinch.php?SID=2e2c5e40e6c7004a0bb765373f8fd357) ???

Maybe have a look here... (http://forum.doom9.org/showthread.php?s=&threadid=72673) ;)


Bye

Munna2002
27th June 2004, 17:45
Hi,

Thanks for the reply. I think I might purchase that adapter, but it's only for composite. If I were to get an 4-pin S-video (female) to component adapter (female), would it work with composite cables as well? Mainly the question is whether component cables are backwards compatible with composite cables.

Looking forward to hearing from ya again. :p

Asmodian
28th June 2004, 22:11
@Soulhunter: Wow that is a cool little adapter, do you know how good the quality is?

Soulhunter
28th June 2004, 23:59
Hard to answer... :rolleyes:

IMHO, around 80% quality of the non converted s-video signal !!!

But I cant compare it to a natural composite signal, coz I have only S-Video output...

Guess its nearly comparable !!!


Bye