I have a 2000 philips magnavox big screen tv and it works but the picture has gotten dark and colors are a little off. anyway, i think it just needs a bulb but i have no idea how to go about getting one or installing one. a roomate i had one time ordered a bulb for the tv he had and replaced it so i know i could do it for mine if i could get a bulb. so anyone know how to help?