Well I've so far only had my PS3 hooked up to my HD projector through a HDMI cable and used the optical output for the audio to connect it to my receiver. Well I took it to a friends house today and took the av cable with the red white and blue rca connectors. Well when I plugged it it nothing sound or videowise will come up on the screen. When you turn the main power switch on the back on and off you can see the screen change sort of like it does when you turn stuff on and off it just won't load anything after you turn it on or off. Will the PS3's not work with non hd tv's? Or do you have to change the output settings to a non hd tv and being as I don't have a HDTV to hook it up to first right now I can't do that?