Under request the seller (manufacturer / distributor) I was told that the LEDs must be connected in any case in a clean circuit and seem to be burst in accordance with my description of the fault, the capacitor. Essential would be a flow filter, which is available from any electrical trade. Quote "In this case, can not grab the guarantee"
Funnily enough, I have no other appliance / lamp etc. problems.
Votes would have been at least, to place this important information about the sensitivity and need for a power filter in the item description.
