Hi, recently moved into our new house and there are 5 small neat chrome spots in the bathroom. I have seen them for sale in B&Q so are probably very common. They have a transformer which is mounted in the loft. When i switch the lights on, they take approx 7-10 seconds to come on. The wiring appears fine and can't figure out why they are taking so long to come on. Once you flick the switch, after a few seconds they are dimly lit then gradually get brighter and brighter then all of a sudden they come on full brightness.
What does the transformer do? What can be done to make the lights come on instantly?