Considering upgrading my Sharp LC32P70E as the Freeview is locking more times than is acceptable (I know this is a quirk of this model but it's happening far too often and I really do believe there's something wrong with the set; in addition, there's a strange popping noise coming form the tv, even when it's switched off. Sounds like someone hitting a golf ball. Most unusual.). We've been offered another model - not from the P70 series as that's been discontinued - but I see from the spec that it has no NTSC tuner. Will this mean I can't play any Region One DVDs through the set? Forgive me my ignorance but I would have thought the set would have to be compatible to receive the signal.