Panasonic PT-AE4000 light bulb run time - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 16 Old 02-27-2011, 08:44 PM - Thread Starter
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When I check out other people's thread about lamp run time, their projector has indicator to replace the lamp at 1800 hrs and after 2000 hrs run time. But my projector has just passed 2000 hrs but I am not seeing any lamp replacing indicator at all.

Should I just replace the lamp or wait for the projector internal indicator to come up then replace?
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post #2 of 16 Old 02-27-2011, 10:41 PM
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Did you run it on normal or eco mode?
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post #3 of 16 Old 02-28-2011, 09:18 AM
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Dirty little secret. If your bulb brightness still looks fine to you, ignore/reset the warnings. I have a AE-1000U and I ran my first bulb to 2300 hrs or so, mix of eco and normal mode. When it got to the end of life, it started flickering a bit, so I changed it then.

I don't think there is any harm in extending it if it looks ok to you.
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post #4 of 16 Old 02-28-2011, 11:05 AM
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While there is no harm in running the bulb out, lamps dim as they age. So by the time you replace it, you will have lost at least 85% of the lamps output brightness. When you do replace it and see a dramatic difference, you'll wonder why you waited so long.
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post #5 of 16 Old 02-28-2011, 03:28 PM - Thread Starter
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Thanks for the responses. I used eco-mode at first 1000 hours and normal mode rest of the time. It is little dimmer for sure but still looks good enough for me. I will wait little longer to see what happens. I have the spare bulb ready to be install.

One more question, does the projector has internal sensor to warn the user to replace the bulb or strictly number of hours usage? If it is number of hour usage, I am just wondering how come mine does not display the message for me to change the bulb?
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post #6 of 16 Old 02-28-2011, 04:19 PM
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There are no sensors, it is driven by a counter. You haven't seen the replace message yet because you used ECO mode for the first 1000 hours. If you ran on ECO mode the entire time, you would get the message at 3000 hours. It should appear in about 300 - 500 more hours.
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post #7 of 16 Old 02-28-2011, 04:25 PM - Thread Starter
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Thanks Sheridan1952. That makes sense now. I probably have another couple hundreds left then.
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post #8 of 16 Old 08-18-2012, 12:47 PM
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Yeah i Just passed my 2000 Hr Limit.
I did reset to Continue use, But one thing i have noticed which really sucks, is If you use it like i do as my computer/entertainment Center. If you turn it on for 10 minutes it counts as one Full Hour. So i'm not really at 2000 Hours, in that case.
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post #9 of 16 Old 09-01-2014, 07:35 AM
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My bulb is at 1800 hrs and seems fine, so I am not anxious to replace it. I was just wondering how to go past the 2000 hrs, but it looks like I just have to reset it?

It's used in my rental cabin anyhow, so idiots leave the projector on like it's a regular TV. Last renters were there for three nights and my counter recorded 44 hrs!!! I'm switching it to eco-mode when I replace the bulb, next time.

And thanks to Mr. G for the Provantage recommendation for the replacement bulb. Saved about $40.
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post #10 of 16 Old 01-17-2015, 12:53 PM
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6000 hrs---Still very good

So...I have reset the timer 3 times now as it reached 2000 hrs. I am probably at around 7000 hours now and it still works fine.

It has probably dimmed a little bit, but nothing really noticeable. I do not use ECO mode.

I have a spare bulb ready to install but I am just going to continue using this one until it fails or becomes too dim. I would estimate it to be 90% of original power.

Has anyone else just left them in and ignored the warnings? I think the 2000 hr threshold is much too low. When mine was at 2000 or even 4000 hrs it was like new.

AE-4000

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Monte
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post #11 of 16 Old 01-18-2015, 07:02 AM
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Quote:
Originally Posted by BCRose View Post
So...I have reset the timer 3 times now as it reached 2000 hrs. I am probably at around 7000 hours now and it still works fine.

It has probably dimmed a little bit, but nothing really noticeable. I do not use ECO mode.

I have a spare bulb ready to install but I am just going to continue using this one until it fails or becomes too dim. I would estimate it to be 90% of original power.

Has anyone else just left them in and ignored the warnings? I think the 2000 hr threshold is much too low. When mine was at 2000 or even 4000 hrs it was like new.

AE-4000

Cheers,
Monte
When I replaced the bulb in my 4000, at around 2,200 hours, it had lost 60% of its brightness. I actually measured this with a light meter. To put it another way, when I put in the new bulb, it was 2 1/2 times brighter.

I would assume that after 7000 hours you have probably LOST 90% of the original brightness. You're going to be shocked at how great it looks with a new bulb.

Mike
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post #12 of 16 Old 01-18-2015, 08:26 AM
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Quote:
I am probably at around 7000 hours now and it still works fine.

It has probably dimmed a little bit, but nothing really noticeable. I do not use ECO mode.
This is analogous to the experiment of the frog in boiling water. Put a frog into a pot of hot water and he'll jump out. Put a frog in a pot of tepid water and gradually bring up the temperature and he'll cook himself without realizing it.

All projector owners should own an inexpensive light meter to monitor light output over the lifetime of their lamp.

7000 hours is false economy IMO.
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post #13 of 16 Old 01-18-2015, 08:52 AM
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90%? Far from it.

My family and I are very happy with it at whatever it is right now. We all watched Gone Girl last night and it was perfect in our opinion.

I will change it out today after the Football games just to satisfy my curiosity now but it is very usable the way it is. I am a photographer and have a light meter so I will do a check as well, I should be able to see a difference in f/stops in 1/10th increments.

To change these bulbs out at 2000 hours is false hope you will be getting better IQ in my opinion. At $400 a pop I have saved $1200 with no loss of quality that is noticeable.
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post #14 of 16 Old 01-22-2015, 03:30 PM
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You don't have to replace at 2000, or 3000- 4000 Hours. But when you do Finally Replace it... WOW The colors are so much more Vibrant and Wow. that's all I can say. You'll notice a big difference and be happy you changed it.
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post #15 of 16 Old 01-22-2015, 04:12 PM
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I did change my bulb on Sunday. Improvement but not so much to bring out a WOW. I would have been happy with the old bulb for a long time yet and will use it as a backup.

Manufacturers replacement recommendations are set extremely low to make certain the picture is always 100%. And of course to sell you a new bulb.
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post #16 of 16 Old 01-22-2015, 05:50 PM
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wow thats insane that you got 6000 hours....i was just googling so see how long guys were getting from theirs. My AE4000 is only at 900 hours.

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