Phone or take it back to where you purchased it if they can't cure it but say we'll get it repair refuse you should be entitled to a replacement or refund so soon after purchase...ie: it's not fit for purpose, if it IS a fault.
Never mess with something that should be under warranty.
IF No joy go to www.panasonic.co.uk click on support or contact us or if you haven't registered the camera click on that first register it then go for the others to get assistance with the problem or a replacement camera if it's a fault Demand it be replaced don't accept a repair. Again while the camera is in warranty don't mess with it. Post how you get on. I'm interested as I don't like people getting ' stuffed ' by the big boys.