The central part of the light source is dark when I light up the lantern. Is this a failure? No, this is not a failure. The top and bottom edges are brighter by design. Related articles Why does the center of the heater tube not glow red? The light flickers when the lantern is lit up. Is this a failure? What can I do if it does not light/does not light sometimes? What is the unit dimension of BALMUDA The Speaker?
