Thanks for your reply. I have already tried switching this to Auto to cover both formats but this does not make any difference. As far as I can tell, this switch has no effect on the laser trying to play a disc, it is only an output switch. I have tried to play a PAL video disc, in this case, a 'Tears For Fears' disc which comprised 4 tracks (3 audio only and the fourth track was a video track). The machine played the audio tracks fine but as soon as it came to the fourth track (video) it immediately gave up. The closest the machine came to playing a PAL disc was when I tried a PAL laserdisc which was CAV, it actually managed to pause one of the frames on screen but not play consecutively.