My Hitachi rearprojection lcd model # 50V720 needs a new lamp , after alot of hours of use, ive been lookin around online for the lamp and aparently there selling the bulb and the box seperately the box(lamp)has the bulb and thers a cable that conects to the bulb to the tv. The bulb itself is cheaper and the box is more. I dont know if I should buy the bulb itself because it could be the cables too, I wouldnt think so but i guess it could be possible after alot of hours of use I imagine the cables could overheat or something, I would like to know as soon as possible so I could order the lamp or the bulb i would only like to buy the bulb itself because its so much cheaper. Btw the lamp model number is UX21517