These TV's are NOT very bulb friendly. It seems about 6 months on the replacement. Now I read them the "Basic Math" riot act, that I would have to leave it on constantly to reach the 6000 hour limit in 6 months.
The last replacement cost me $98 with overnight shipping. I think it was more a voice of the customer complaint that my brother (HP Employee) filed on my behalf than my call to customer service.
But now it seems they're requiring return of the housing module. I kept my last one. I'm almost tempted to see if they bulbs can be ordered in bulk at an inexpensive rate, and then just popped into the housing.
It's a Japanese manufacturing company that makes them, I will post a link when I get more info.
But is anyone an electrical engineer that would know about putting a different 150W bulb into the enclosure?
DATA from their bulb page with link
This item is available exclusively through the HP Parts Store as part #TGASF002080A-J .
You can also reach the HP Parts Store at 1 (800) 227-8164.
Restore your HP RPTV picture to its original clear, bright, factory-fresh self with the RPTV Lamp Assembly Module. Yes, it's true. . . unlike plasma and LCD TVs, RPTV screens can be restored to their former brightness simply by replacing the bulb.
Specifically designed for the ID5220n or IDB5220n, this 150-watt replacement lamp is good for 6,000 hours (3 to 4 years of viewing life).
* Ensure uninterrupted excellent performance if the bulb burns out
* Install easily in the front of the TV
* Compatibility: Designed and qualified for use with HP ID5220n or IDB5220n
* Get peace of mind with the 90-day limited warranty
* Get answers to your product questions toll-free, 24 x 7, or via e-mail in as little time as an hour, at www.HP.com/go/totalcare
1. Actual lamp life is based on a variety of factors and may vary.LAMP BUYING PAGE