MVision S3 FORGOT PASSWORD

Hi,

I have a Mvision S3 box over in Spain in a family holiday apartment. Unfortunately my Grandfather has passed away and he was the only person who knew the passcode on the TV box. We've had no problems with it before but all of a sudden it is asking us for the passcode. Is there a way to reset the box or take the passcode off without actually having the original code?

Thank you