half way through watching a movie and my dvd player decided to stop the audio and display the message 'protection' on its display. Its an LG DA 3520 and I was watching an original DVD ( lord of the rings ). Ive tried everything to get it working and Im on the brink of smashing it up! Any ideas anyone???

The only thing I can suggest is to unplug it, and leave it unplugged for a while, then plug it back in and see if its reset itself.

Never seen an LG, but make sure that the speaker leads aren't shorting out - otherwise is probably the amplifier that's blown - and shutting down to prevent it killing the speakers.

Thanks for the advice folks - merry xmas

Did you have any joy, our LG home cinema dvd player packed up just before Christmas too, didn't recognise discs etc. We gave up and bought a Sony DVD player, but are thinking of trying to get just a dvd drive to fit in it.
I rang a LG repairer and they thought it was either the drive packing up or the laser lens.