Lamp replacement i was wondering if i can just replace the bulb,rather than replacing the whole light housing.if i can what is the process on doing so and what would the part number be for the new bulb.thanks

Well I don't know if I should be answer this question, it's going to cost you,
Oh heck there you go , of course you can, it is so easy, even my two year old can do it.
Here something you should know first, don't tough the bulb, do you know what I'm saying don't touch it,
Make shure that both fan's or working, this is one issue that if the fan is burt out, the bulb won't last, the second problem when bulb burn's out is bad ballace, because of bad cap and diode inside, but don't worry about that,
Here is the info on other adjustment you can do but don't read to mutch, you'll get lost thttp://service.panasonic.ca/pdp/ServiceManuals/pt50-60dl54-sm.pdf
Mmmmm did I mention your welcome

What about Bob