I had a customer 2 years ago with the same issue and after 3 service calls, 2 new hd boxes, an outlet and a drop, guess what? It was a firmware issue with the tv. This was a fairly new lcd and I don't remember the brand but we got on Google and found out that there were numerous issues with that particular model. They sent the customer a usb storage dongle with the firmware loaded on it and that fixed her problem. This may be totally different but I thought I would share it with you.
Re: Delay between sound.
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