Had one of those at work whilst PA testing, TV mounted to the wall with the cables going into a wardrobe where there was plastic trunking and re-appearing lower down the wardrobe near a plug socket.
This in itself was not the problem but what piqued my interest was the fact that the cable coming out of the TV was flat twin core and the cable emanating from the plug being round, took of the cover from the trunking and you guessed it, the cable was twisted together and wrapped in insulating tape which would probably have separated if the cable got tugged (and kids will tug anything).
The really annoying thing is that it got red stickered (plug and device), recorded as having had failed but left in situ as it was not one of the caravans owned by us, so they have to liaise with the owner to get it fixed. naturally this meant the failed stickers ended up being removed
.
Got fixed in the end though by just putting a plug on the TV cable section and not having it routed through the wardrobe.