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Connecting laptop to TV via RCA
In the past I've been able to plug a 3.5mm headphone jack into my computer with RCA connectors on the other end. The red, white and yellow plugs then go into the TV so I can use it as an external screen.
At the moment, all I have is a cable which is missing yellow. I thought I'd just watch movies in mono rather than stereo. However, despite being set to 'AV', the TV thinks it's getting no signal. When I plug the red and white in to the appropriate ports, I'd expect to get sound, but I still get nothing. The laptop's sound is up to full and when I pull the headphone jack out I get blasted.
Any ideas why this wouldn't be working? I'm using a Asus netbook with Windows 7. Could it be something to do with the chipset etc? I don't see why if I can use headphones perfectly, the sound can't be routed to the TV via the same method.
The only thing I've thought of is that the cable is broken. I bought it from some woman on the side of the road for less than a buck, so there's a chance, but it looks to be in pretty good condition.
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