I've purchased a SONY DVP-CX860 and have had it modified, but when I connect it directly to my TV via SCART the sound is totally distorted. I tried connecting the audio out from the DVD to my amp but it was the same problem. But when I connect the digital optical out to my amp the sound is perfect. The picture is fine all the time. What could the problem be? Could they have made some misstake while modifying it? Do I have to return it and let them redo it?