I have some GU5.3 12v dichroic halogen luminaires [5 x 20W in a string suspended on a pair of catenary cables]. These are fitted in a utility room. I avoided low energy bulbs because of the lights being switched on and off regularly as we pop in to tend the machines. Yesterday I hung a row of wall cabinets, and spent a couple of hours in there fitting them and hanging the doors. The bulbs noticeably dimmed during this time. The 230v-12v transformer is a big wirewound unit, not electronic, and it got quite hot. Once it cooled off, normal output resumed. Anyone else noticed this problem?
