Hi sancho_bg, welcome to the Sony Forums

I'm not sure I understand the problem: is the camera not working when you press the shutter?

A constant noise is not normal with this model and probably indicates an internal fault, which is quite possibly related to the problem and which will need to be repaired at a service centre.

If you are in the UK you can register for a Sony-approved repair here or alternatively, ask at a local electronics repair centre for an estimated repair cost.

Cheers

Mick