So im in the process of sorting bits on my Maygay machine & ive annoyingly got four/five bulb holders that will not work even if I change the bulbs holders to known working ones. The on bulb holders that work are yellow ones I bought on ebay but they dont follow the same sequence as the others and tend to stay stuck on the whole time... Looks a bit shit when your playing the main board. Ive tried replacing the main lamp board but that doesnt make a difference? The wiring looks fine and I dont want to keep messing about with the wires....