When you select video output settings on the ps3 display options, if you press square the ps3 will test the display for the video output. I tried a blu ray movie but only 1080i would appear.

I tried hooking up component cables and I was able to get all video outputs including 1080p but 1080p isn't available thru components from what I heard.

Can I connect the ps3 and the tv via a hdmi-hdmi cable for video only and then use an optical cable from the ps3 to the 990 for surround audio?
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Sony KDS60A3000 hdtv 1080p
Sony PS3
Outlaw 7500 and 990
Outlaw LFM1 and LFM1plus
Outlaw SMS-1
Alegria Audio LCR speakers
5 ch. system