Evening all, This is my 1001th post here. Only took ten years or so. Anyway as I continue to do more work in film, most of it B&W, I've run into a potential problem. Much of my darkroom gear came from a university auction as they closed down most, but not all, of their darkrooms on campus. A lot of it is equipment I used as an employee there. Among that are two Thompson duplex safelights, to me the best safelights available ever. These use, as I recall, a unique light source to create the light. It takes 10-15 minutes to warm up after it is turned on. Does anyone know what this light source is and where it might be purchased? I have other safelights as well and they would be fine but I prefer these. It may be a moot question as the lifespan on these seems nearly infinite but as soon as I get complacent they will fail or who knows, maybe they will just explode. Anyway are the components for these safelights available? Thanks. Rick H.