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S video output on HP dv2500


I am trying to output the display to the TV via S video, but all I get is a blank screen.

I know I am on the correct AV channel (I am getting sound) and I have tried various ways of connecting (component, SCART adapter and SCART adapter through another appliance).

I have the most up to date graphics drivers (Mobile Intel 965 chipset). I get no option for S video in the graphics properties pop-up and fn+F4 only attempts/displays a pop-up with laptop->laptop and no other options.

I have tried booting with the S video cable plugged in.

I have tried changing the resolution settings (although they only go down to 800x600). The freq only outputs at 60Hz, but the TV is set to accept this.

I cannot find any driver/device manager entry/configuration software for the S video port.

I have searched everywhere on the internet for help with no success (even using quotes around ''s video'' makes it hard to narrow down the results).

I guess the main things I would like to ask are
+ Is S video managed by the (onboard) graphics card and the drivers relating to it or does it have it's own driver?
+ Can you suggest a way to get the computer to recognise that there is an S video connection?
+ Could this be a bios problem (HP bios interface is very limited)?

(For a ''media'' laptop it has failed majorly - it can't use the TV card and won't output to TV :-)



Posted by on

  • markdibley Nov 26, 2008


    Thank you for answering, but as I said in my explanation, pressing fn+F4 does not display the output on the TV. The Mobile Intel graphics adapter gives a pop up of 2 laptops, but it doesn't recognise that there is a TV output to send the display to.

    What I DIDN'T mention is the laptop is running Vista. Are there S-video issues in Vista? Can anyone tell me if s-video ports require drivers?

    Tomorrow I will try with a second laptop (which I am sure will work normally)

  • markdibley Nov 27, 2008

    I finally found the problem. The S-video cable that came with the laptop does not pass on the detection of the TV. It is a simple 7-pin S-video to female RCA video composite jack.

    I got another adapter (nVidea) which has a 9-pin plug and a variety of outputs including composite. This works. I think the reason it works is because the cable adapter is sending the output recognition signal back to the laptop.

    I have found that to get it to work with the TV the computer needs to be switched on with the output to the TV attached. After this I can unplug and plug in the cable and it is automatically detected.

    As I said before, this only works because I am using this new cable adapter. My original cable adapterdoes not work at all. When I can, I will get an S-video to S-video cable and see if that works too.

    Thanks for your help.



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If Fn+F4 not working, you need check the BIOS on display options, see if it has been tick..if not try update the BIOS from web..if no any help above, the S-video port physical faulty

Posted on Nov 26, 2008

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after you have everything plugged in and you are in windows please press FN + F4 and it will shows the diplay on TV.


Posted on Nov 26, 2008

  • Gagan Rajput Nov 30, 2008


    yes your S video cable is bad because Laptop is not detecting TV signals through S video cable.




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