I just helped a friend with a frustrating problem and since I couldn’t find any answers on the internet (because none had been posted) I figured that I’d put something up for the next person with this issue:

If you have a “LG LHT764” home theater, dvd, 5-disk, divx, mp3, system, etc. And it ever goes into some type of demo or repeating track loop or mode, the “only” way to get out of it is to hold down the “STOP” button for 10 seconds.

Other messages in this mode: “opo-45” “write ok”