I installed Volt 100w XFMR with (6) spot lights and everything worked perfectly for about 3 weeks. last night i noticed they did not come on. I started troubleshooting and found that the only to get them on was to switch to 'on'. Would not come on with all the other options. The next morning i hit reset and switched control to 4 hours, after about one minute the lights came on in during daylight. Tried every scenario- dusk to dawn, 2,4, 6 hours, all lights came on after a minute or so during daylight hours. Do you think my transformer relay, switch, photo cell is mess up? They were all working fine and this just started, not coming on at dusk.