Who has a pre-lit Christmas tree? Who invented this instrument of supposedly cheerful holiday torture? Now, before anyone gets upset he is not saying that ALL pre-lit trees are bad... just the ones that suck like the one Mojo happens to have. He has a 12 ft pre-lit Christmas tree with about 5,000 light bulbs on it. The tree is only three years old now and once one bulb goes out, the entire thing goes out. So, you need to find the dead bulb. With over 5,000 light bulbs on a tree, that is a lot to go through. Is there anything I can do?