Yesterday I was installing some downlights in my living room which I have done twice in the past in other areas of the flat. After checking the wiring was correctly done I plugged the 5amp fuse back into the fusebox where it blew.
I was baffled especially after rechecking everything again and then to rewire the fuse. After rewiring the fuse I plugged it back into the fusebox where the lights now all worked after switching them on. I couldn't understand at the time why the fuse blew.
Later in the evening I went to the bedroom which is on the otherside of the flat and found that the downlights didn't work in there. It seems as if the problem with the fuse blowing may have come from the bedroom which I don't understand. The two other bedrooms, kitchen, bathroom, hall and living room have lighting except for the third bedroom which had been working the previous day.
Today I have changed the lighting switch and connected a normal 60W mains powered bulb which cut out the use of the transformer where the light still won't work. Using a pocket mains tester (screwdriver type that detects current) it seems as if there is no power going to the switch nor to the lights.
Prior to this happening the 5amp fuse did buzz a bit when turning on the lights in that bedroom. The downlights fitted in there where bought from B&Q 4yrs ago which consisted 3lights and one transformer. There was a dimmer connected as well.
I'm not exactly sure if the problem lies with the ceiling rose in that bedroom or somewhere else. Would anybody have any advice before I call out a sparky? I can see it'll probably be expensive as i'll have to cut through the plasterboard to get to the ceiling rose.
TIA
P