I have a Sanyo DVD player that has been giving some problems. I notice some de-synch between the audio and video (most noticeble in "The Quiet Man", almost a 1/4 second video lag). I had it hooked up with standard RCA cables to my Yamaha reciever (Audio). Also tried running video straight to LCD. No joy. Any idea what may cause this. I tried an optical cable, but the reciever wouldn't take the signal. Now I am stuck.