I had a similar issue with Samsung when I bought my first LCD. Brand new TV had lip-sync issues. I called up Samsung and they sent a junior engineer who confirmed the problem, but said his senior had to approve repair/replacement. The senior engineer came and blatantly blamed it on the cable reception. I then played some blurays and dvds which displayed the same issue. He said he would communicate it to his team and let me know.
As expected there was no response for several days. I finally called up and he completely changed his tune saying that there is no issue with the TV and the ticket was closed. I responded very harshly and threatened to go to the consumer forum. Next day a junior engineer came over and changed the main board which resolved the issue. Moral of the story : nothing is resolved without harsh talk and threats.
As expected there was no response for several days. I finally called up and he completely changed his tune saying that there is no issue with the TV and the ticket was closed. I responded very harshly and threatened to go to the consumer forum. Next day a junior engineer came over and changed the main board which resolved the issue. Moral of the story : nothing is resolved without harsh talk and threats.