No sound when Wii is switched on

You may need to upgrade to better cables. Here is a good set that I recommend.
480p HD Component Cable for Nintendo Wii

- Matt

i think your problem is with cabling your surround sound is audio only and you wii is video and audio. i would hook up wii first and get it working first. dont plug the surround into the yellow jack on your audio video switch
good luck

Hi, the Wii does not strictly have an HDMI connection but the closest thing to it is a Component cable. This has 5 connections and is as close to HD as you can get without a full HD connection. Make sure your TV has component connections on it as well if you do purchase one. They can be bought for around £5 off of places like ebay.

Hope this helps

You'll need to purchase an HDMI cable and use that to connect your hd box to your tv. Your tv should have several HDMI connections on the back to facilitate the hookup and you will not have a true HD picture without that cable. You can buy this cable from the same place you bought your tv or www amazon.com as well as many other electronics supply stores, hardware stores, or places like Kmart, Walmart, Bimart, etc. You can also buy a multi port Rh connector box that you can run multiple components through and just push the corresponding button for the component you wish to operate.
Hope this helps and please rate my solution!!

The Wii can display on a HDTV, but keep in mind the output is only 480p. It is not true high definition, and it will only display this using a component video cable. There shouldn't be a difference with LCD and plasma.

You will also need to go to the display settings to force the Wii to display in 480p.

Try a different input (safe to assume your Sony has multiple?) and see if it is that specific input. Also, try a different device like a DVD player or VCR and see if you get the same result.

Good luck.

The red and white ones, that should be linked or the same are sound.

on your tv, there should be color coded ports that tell you which cords go where but im almost 100% sure that the red and white cords are for sound and the blue and green cables are for hd video hookups.

unplug it from the sky box

We just upgraded from a 32" LG tube tv to a 46" Insignia LCD and had the same problem with our Wii and PS3. For us, we just switched the TV settings DCM (digital clear motion) function. We keep it on high for movies and TV shows and turn it completely off when playing Wii and PS3 games. Hope this helps!!

ok your tv does not come with the very best sound, you have to get a receiver 7.1 or you can use the optical wire , that's if the system you are using has that option.