Originally Posted by Dreamliner
I emailed JVC about the "Lamp Replacement" coming on at 3400 hours when the spec sheet says 4500 hours lamp life. This was their response:
"There isn't an exact amount of hours on a projector. There is a feature on the projector called Lamp Power pg. 43 of the manual which if set to (high) it will decrease the lamp hours. Typically the estimated amount is roughly 4500. When the lamp reaches at about 80% the message will appear for you to replace it. This is normal."
3400 is 80% of 4250 hours and I think I'll be fine going to 3800-4000 hours before replacement. I might just replace sooner and use the original as a spare. Typically when I use my projector, it's on for 6+ hours as I don't do short sessions and do not use it like a TV. I'll usually sit down and watch through a bunch of TV show episodes or a handful of movies.
I'm trying to stretch my lamp life because I want the replacement lamp to last until my next projector, so every hour I get out of my current lamp is a 'free' hour. Also, it seems like this 80% thing from JVC is kinda arbitrary, so I'm not sure I'm actually risking anything and I know my on/off cycle count is 'relatively' low for the amount of hours on the projector because of the usage pattern.
At long last my RS600 is also displaying "Lamp Replacement" (started a few days ago). I thought that I had better go ahead and put in the spare lamp I bought a while back, but while searching the Owner's Thread for info on the lamp, I have run across your post. I just checked the lamp hours and, sure enough, it says: 3416H. So, 3400 seems to be a special number.
My original reason for searching for info on the lamp was to discover what condition(s) gives rise to the "Lamp Replacement" message. So, it is strictly
based on hours, right? The image my projector throws still looks great, and bright enough, so I, too, would not want to prematurely replace the lamp (and for the same reasons as you - I want my next lamp to carry me forward to my next projector in a couple of years... Also, I use my projector as you describe: Lengthy sessions, not a lot of ONs and OFFs)
So... I'm curious where you are with your lamp replacement? Still milking the original lamp? Or preemptive replacement? (I tried to search through your posts, but there's so many that I gave up and decided to just ask you directly ;-)