My new 28PW6618 doesn't seem to have working PIP - the serial no. begins HJ 100 - I've been into several showrooms and PIP works but their serial nos. all start AV1n - have Philips produced a cheaper batch of this model? The helpful Philps 15p a minute line kept me hanging on for 5 mins before saying the 28in model doesn't have PIP - despite their own website saying it does have PIP ! If anyone has working PIP on this model would like to hear from them if their serial no./product no. starts with HJ 100 Thanks - Phil. P.S. the audio in on scart 1 always says Mono even when a good stero plug put in !