There are six LED lights in the ceiling of the kitchen. Occasionally, they all dim briefly so I suspect a Lutron dimmer is faulty. There are two of these, one in the kitchen and one in the adjacent dining room. The lights dim whichever switch is used to turn on the lights but I wonder if both switches are operational at the same time regardless of which one is used to turn on the lights. If so, I imagine that just replacing the bad switch will solve the problem and save a few bucks.
Is there a way to figure out which switch is bad or should both dimmers be replaced at the same time? If the latter, how do I determine which one is the master?