Mine stopped putting out steam. I poked a hairpin in all the suggested places which did not help and in desperation took the thing apart. First, remove the electric plug from the socket of course. Remove the water container. Undo two screws to remove a grey piece of plastic.
Then undo 6 screws holding the cover to the unit. The two 'front' screws are quite long.
You will see a plastic tube which I found to be crimped under a holder. Remove the two screws holding the tube in place and make sure there is not a sharp bend in the tube. Mine seemed to have so I put it back with a round bend. I also removed the tube from where it connects and blew through the tube to make sure it was clear. Replaced all the parts and it works fine now. HTH
John
June 2017