I leave a ceiling lamp in my kitchen on at night just to be able to walk around when the lights are off if I need to see. I have done this since I moved into my place almost 2 years ago and today they finally started going out. They flickered for a few minutes and then went out finally. I took the cover off the lamp and found 2 cathode type lights. Tried searching around for somewhere online to get them but have no idea what I am even searching for.