Can anyone help me. I have connected my dvd player up via a JS rgb to component convertor and now on certain scenes on dvds the screen goes black and a message appears that reads "out of frequency"...is this a faulty convertor box or what???..as my dvd player was okay when linking it up via s-video. I can't understand why this only happens on certain scenes and not all the time though.....have looked through the manuals but can't find any explanation!!!