I have had the Lumie Bodyclock Classic for a few years but have not used it for a while. Now I am working shifts again I thought I would start using again. However, I cannot seem to get it to work. I am not sure I am setting the alarm correctly. Unfortunatley I no longer the instructions. When I put the alarm hand on the hour I want to wake and have set the button on the side to LIGHT. I have tried with the button marked A both pressed on and off but nothing seems to happen : ( I have checked the bulb and this is working?