Hello, I purchased this TV yesterday (on recommendations from this site), but I have a couple of problems, I don't think that my set is working allright: 1. No picture settings work on RGB sources, this might be by design!?? 2. S-video is black&white, regardless if the signal is PAL or NTSC (but the manual states that the TV is supposed to be able to handle both NTSC variants, even) 3. If I connect an external amplifier on the TV, there is something picked up from somewhere (sounded like a radio station). Also, when I'm watching a channel from the cable network, muting hardly lowers the volume, unless I unplug the audio cable (doesn't matter if it's actually connected to the amplifier or not). This possibly can't be normal, did I misunderstand the TV specification or could it actually be defect?