Broken bulb? Or would it simply be time to switch to energy-saving LED bulbs?
Here is the answer: LED bulbs, warm white manufacturer HERRNHUTER or OSRAM Suitable for Moravian Outer Stars A4 and A7 6W (Osram 4W) / 500 lumens (Osram 470lm) / 2350 Kelvin (Orsam 2700K)
