I have the z4 and I turned it on today and there was a yellow light showing on it. the picture looks fine but that light means something. I dont have my manual as it burn up when our spare room caught on fire. Any suggestions as to what it is and what to do about it? thanks

Sounds like your lamp is getting old.

http://www.hometheatershack.com/PLV-Z4_OM.pdf

Thanks a bunch man, that was very helpful. Quick question, since the bulb is near its end cna i just run it until it pops????? I have a spare, but i wanna milk this one for everything its worth. Also, i dont think the picture has dimmed very much could it be something else?????????

Thanks a bunch man, that was very helpful. Quick question, since the bulb is near its end cna i just run it until it pops????? I have a spare, but i wanna milk this one for everything its worth. Also, i dont think the picture has dimmed very much could it be something else?????????Your bulb may not have changed much "visibly" since your eye adjusts to brightness levels and usually the biggest changes occur early on. You have been watching pretty close to the same lumens for awhile. BUT, the distance between the two surfaces in the bulb itself are wearing off and the distance though microscopic is almost too far to strike. The warning light turns on based on an electronic setting that says when it takes x amount more voltage to get the strike to occur, you get the warning light. The warning light is just that. "Hey! This lamp is getting close to going! You better arrange for a replacement soon!" Keep running it. You could get several hundred more hours before it goes or refuses to strike.

How many hours does your lamp meter read?

Edit: The PJ could also be setting the warning simply because of the number of hours and is not looking at the strike voltage at all. You would need to converse with the Z4 community more to find out which it is doing.