Hi guys, looking for a bit of help.
My rented flat has about 20 Gu10 spotlights on dimmer switches, which were all halogen when we moved in about a year ago. A combination of being sick of replacing them so often, the energy consumption, and spotting some LEDs at a very good price, I decided to replace them all with these
https://www.aldi.co.uk/led-gu10-bulbs-10-pack/p/074572099953400 N.B. not dimmable ones.
Note, I would have done this a lot earlier, and probably with 'higher quality' bulbs if it was my own home (not sure how much longer I'll stay here and no idea if my next place will have spotlights).
Anyway, I have 3 different circuits, each with a dimmer switch. One of the dimmer switches (bedroom) buzzed a little when dimmed when it had halogens, but it was very quiet so never thought much of it.
Now I've replaced them all, the bedroom switch buzzes all the time, and a little louder. However the kitchen switch now buzzes like hell. Really quite loud, and if it's at full brightness the LEDs all flicker really fast. If I roll it off a bit then they are fine, but still a lot of buzzing coming from the switch. There is also the same buzzing at the fusebox. I switched it off at the fusebox and opened up the kitchen switch for a look, but I know enough to know that I can't really do much in there. I've done a bit of rewiring in the past, but it's a very fiddly looking cavity and I cba to be honest, and not really expecting that just rewiring would help anyway.
When I turned it all back on, it still buzzed but not as quiet. And I also noticed that there was a bit of a smell coming from the switch box.
NB the living room switch, which didn't buzz before, still works perfectly.
Can anyone shed any (mind the pun) light? Is it because I've bought cheap bulbs? Is there something wrong with my wiring that an electrician should look at? Or are all gu10 LEDs not suitable for all fixtures?