Purchased this item to get audio out of a Technika 22" X22/14b TV/Video combination (by Tesco), which does not have an audio out or headphone socket.
Plugged the unit into the TV scart socket and a set of headphones into the output jack. Nothing.
The adapter was a bit loose in the scart socket on the TV so I found a spare scart lead, connected that into the TV and then plugged the other end of the scart lead into the female scart side of this adapter (which isn't shown in the product picture).
Then I got audio out from the 3.5mm jack.
Sound will still come out of the tv and is controlled by the remote control, but this does not control the volume of what's plugged into scart adapter.
So I leave the TV speaker volume turned down to zero and have connected a set of powered (computer) speakers which have an integrated volume control and an integrated 3.5mm headphone socket.
This is now perfect as a bedroom TV as the speakers are close to the bed head and headphones can be plugged into the speakers if my partner is sleeping.
So to sum up, the unit on its own did not work with my particular TV, but by adding an ordinary (male to male) scart lead between it and the TV using the female side of the adaptor it works fine.
Hope that may help anyone else who has problems when using the adapter plugged direct into their TV, as I only found the solution by accident.