Four rows of three GU10 downlights, each row switched by 1 switch on a 4 gang switch.
1 lamp in one of the rows comes on for about 20 mins, then goes off for about the same time, then comes on again etc. The other 2 lamps in the rows are normal, as are the other rows.Seems like it might be something to do with overheating maybe?
Any ideas?