It's out of warranty. It works but only when I press and hold the button in, so I can't use it. I think it's something to do with the button mechanism.
Any ideas? It's not the robovac brand but obviously it wasn't cheap!
Everybody else has great advice, but here's a video like to a tear down of your specific G30. All the screws you have to remove get circled in red.
Just in case you're a visual learner