Any Electrician out there who can help please? I have 2 outside up and down lights which turn on when it's dark and off when it's light. These are linked to a photocell so that they can turn off and on. It's not working in that the lights are permanently off. Thinking it was a problem with the bulbs I changed all the bulbs and that did not solve it. I have checked the fuse box and cleaned the outside of the photocell but no luck. Anything else I can try? Thanks.