Dualit Architects Kettle - switch?

Hello,

Following a thorough (perhaps too thorough) descaling of this Dualit Architect's kettle, I appear to have problems with the power staying on. I've ruled out the power base unit as I know someone with the same kettle and we've tested it.

Here's what happens;

1. Switch clicked down - power comes on and blue light shows, seconds later it powers off.

2. Holding the switch down or rotating the kettle slightly on the base makes the power come back.

I've tried to open it up to have a look but I've got stuck.

The lower curved panels come off easily as they are meant to be replaceable. Two screws come out from behind these panels and three screws come out of the base. The entire dark grey plastic base is now loose but not free.

The lower screw on the handle comes out and the chrome effect handle cover is also loose but not free. The upper part of the handle - where the lid opening button is, appears fixed and I can't see how to loosen it as there are no visible screws. I'd prefer not to force and break it.

In order to access the switch and check the base internals I need to remove the dark grey plastic kettle base/housing, however it is connected at the lower part of the handle.

I suspect there's fixings below the chrome handle cover - but to find out I need to remove it and as mentioned the top of this handle cover is seemingly secured over the lid button.

Any tips most welcome, thanks!