Blocked nozzles

[The Hat]

You can flog a dead horse, but it’s still going to be dead.. no matter how much you huff or puff..

 

[user5800]

I think the hat is pretty right about the fact that if the electrical part is gone there's not something you can do.

But time ago I found this video about waterpicks after min 3 and I share it because it's interesting: