I recently picked up a 45S head from the infamous bay for a very good price (as is, "didn't light up" as the lamp was missing). Well I put a lamp in it and it fired up just fine, except that it is not coming on instantly. It takes between 1 and 3 seconds for the light to come on. Any idea what might be causing this? It needs to be cleaned, there is a LOT of dust in the fan etc, I was only home from school for about a week so I didn't have a chance to dig into it as much as I would have liked. I suspect that the problem is somewhere in the power supply/switching part of the electronics. Has anyone dug into these and know how the power supply is set up? I hear what sounds like a solenoid being activated when power is supplied to the "timer" cord. I wonder if there is a solenoid is it possible that it is dirty and therefore not making contact as quicly as it should be? My other thought is that I believe there is some kind of voltage stabilization built in and perhaps it is taking time for whatever buffering circuitry there is in there to be charged and hence the delay in the lamp coming on. If anyone has seen this issue or know a little about what is under the hood in these heads (or just feels like ) would share whatever input they have I would be very appreciative. I am back at school, and don't have the head here, but I am trying to get a feel for what it needs so when I am home again I can dig into it in an informed fashion.