My AC Adapter is loose in socket.

[Boops De Dooper]

When you plug it in you can wiggle it a lot.How do I fix this?
The adapter model is:TPW-1201000
It's an adapter for router if that helps.
The light goes out on it's own sometimes if something to be bumped into it.

 

[ffg7]

is it the power jack in the router is loose or the power adapter connector loose in the jack?