Humming sound when hooking up PS3 component

[syncguy]

Originally Posted by adrock920

When you get the humming sound do you notice any very faint vertical scan lines that are constantly moving down the screen? If so it may be a ground fault loop or something like that. To fix it you need to get a 3 prong to 2 prong converter for the power plug. Hopefully that helps.
*** I had a humming problem a while back and it only happened on certain titles.

This well could be a ground loop. If this is the case, you may hear it on other speakers as well. The other speakers could hum to a lesser extent due to equalisation. Which speaker hums when it is directly connected to the TV?