Onkyo TX-SR605 Receiver "change aspect ratio sony tv" Questions

...aspect Using Sony DVD recorder/tape combo RDR-VX515, Sony TV KDF-E42A10 and Onkyo Receiver TX-SR605 DVD is set to 480p using component(3 wire) video to Sony wega gate TV input 4 shows widescreen ...

...change the TV aspect ratio to fill the screen on standard def channels. HD channels and DVD allow aspect changes as always befor. The hookup before I added HDMI was with component cables direct from ...