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Official Panasonic PT-AE3000U OWNERS Thread. - Page 152

post #4531 of 4828
OK, now my projector is flickering (light bulb seemingly dimming up and down very quickly, maybe about 15 times per second[?]). Even when I set it to Normal mode is still flickers. If I turn off the projector and turning it back on again, the flicker will disappear for about an hour, then it's back.

There's only 1,200 hours on the bulb and mostly used in eco-mode.

Is this a common thing with this projector? It's already out of warranty and I'm in about 8 months time it's time for me to buy a new bulb. If this is NOT a bulb issue, I don't want to fix it and change the bulb. I'll just sell it used and buy the AE4000 in 8 months or maybe the 5000 will be out by then.
post #4532 of 4828
Quote:
Originally Posted by David Susilo View Post

OK, now my projector is flickering (light bulb seemingly dimming up and down very quickly, maybe about 15 times per second[?]). Even when I set it to Normal mode is still flickers. If I turn off the projector and turning it back on again, the flicker will disappear for about an hour, then it's back.

There's only 1,200 hours on the bulb and mostly used in eco-mode.

Is this a common thing with this projector? It's already out of warranty and I'm in about 8 months time it's time for me to buy a new bulb. If this is NOT a bulb issue, I don't want to fix it and change the bulb. I'll just sell it used and buy the AE4000 in 8 months or maybe the 5000 will be out by then.

same thing happened to me a couple of times, i have the same model. just put the bulb on normal mode and use it normally, should go away in a day or two, annoying i know but that's the only solution i know of. i even though that it was my HDMI cable but it was from the projector.
post #4533 of 4828
What strange is that whenit flickers, all I have to do is turn off the projector and turn it back on again, and the flicker goes awy for good (until the next day... Which will start with no flicker, an hour later flickering like watching movies at 15fps, turn off the projector, turn it back on agaian, then it's ok again. )
post #4534 of 4828
Quote:
Originally Posted by David Susilo View Post

What strange is that whenit flickers, all I have to do is turn off the projector and turn it back on again, and the flicker goes awy for good (until the next day... Which will start with no flicker, an hour later flickering like watching movies at 15fps, turn off the projector, turn it back on agaian, then it's ok again. )

Have you run it in eco-mode since you first got the bulb? I read somewhere that if you only run those bulbs in eco-mode they eventually start to flicker. Someone recommended putting a few hours on it in normal mode before using eco-mode to avoid the flickering. But I run mine in normal mode all the time so I don't have any direct experience.
post #4535 of 4828
The first 100+ hours I used normal mode but after that I usually use eco-mode until about 1,100 hour mark when I start feeling the image have dimmed a bit. Since then I'm using Normal mode again.

Now I'm at 1,216 hour and the severe flicker started at just 1,200 mark and the only way to stop it is by switching the projector off and back on again.
post #4536 of 4828
Quote:
Originally Posted by David Susilo View Post
The first 100+ hours I used normal mode but after that I usually use eco-mode until about 1,100 hour mark when I start feeling the image have dimmed a bit. Since then I'm using Normal mode again.
It's my understanding any UHP bulb can develop flicker, caused by uneven erosion of the cathode/anode, which I assume makes the arc pulse.

I've read reports that running the projector in normal bulb mode for 20-50 hours has solved the problem, so maybe you just need to give it some more time.

Quote:
Now I'm at 1,216 hour and the severe flicker started at just 1,200 mark and the only way to stop it is by switching the projector off and back on again.
I'm sure you know that although cycling power may fix the flicker temporarily, it's the absolute worst thing you can do for bulb life.

As a data point, my AE4000 has 1160 hours on the first bulb, I've never seen flicker. I ran the projector in normal the first 20 hours, in eco since. Although the bulb is definitely not as bright as when new, I don't see the need to switch to normal yet. Maybe when the flicker starts....
post #4537 of 4828
Yeah I know on the other hand, my movie watchoing session usually lasts 6 hours straight. So I'd take shorter bulb life rather than watching the movies for 6 hours with flicker :T :T
post #4538 of 4828
Anyone every have a problem with the ae3000 automatically shutting down after it beings its initialization sequence?

It starts to power up. "Panasonic" comes across on to the screen. It completes the lens adjust. sits still for about 5 - 10 seconds then powers right off, automatically. I can't get it to start up again with either flipping the power switch on the side or unplugging/replugging the power cable.

Its a problem I've had with the projector for some time. I used to be able to toggle the power switch on the side and the device would start up on the next try. I used to have perform the toggle once or twice, then gradually it became worse. It got to a point where I would have to do this toggle 10-15 times to get the projector to start sometimes. Other times, especially if it has not been used in a few days, it would start up on the first try. But now it just won't complete the start up now matter how many times it try the toggle trick.

anyone ever experience anything similar?
post #4539 of 4828
From your description it souds like power supply issue, more spesifically a leak in at least one capacitor of the power supply.
post #4540 of 4828
Quote:
Originally Posted by brahma23 View Post

Anyone every have a problem with the ae3000 automatically shutting down after it beings its initialization sequence?

It starts to power up. "Panasonic" comes across on to the screen. It completes the lens adjust. sits still for about 5 - 10 seconds then powers right off, automatically. I can't get it to start up again with either flipping the power switch on the side or unplugging/replugging the power cable.

Its a problem I've had with the projector for some time. I used to be able to toggle the power switch on the side and the device would start up on the next try. I used to have perform the toggle once or twice, then gradually it became worse. It got to a point where I would have to do this toggle 10-15 times to get the projector to start sometimes.

How many hours on the bulb? Have you tried replacing it?
post #4541 of 4828
Quote:
Originally Posted by Bob Whitefield View Post

How many hours on the bulb? Have you tried replacing it?

the bulb is definitely old (past 2000 hours), but was working just fine.

I was thinking maybe its the bulb as well, but the projector almost sounds like its tripping a circuit breaker (you can hear a click just as it turns off). I didn't really think a bulb could do that. Has anyone experienced that with an old bulb?


Power supply issue sounds plausible.
Anyone have a similar experience?

thank!
post #4542 of 4828
Quote:
Originally Posted by brahma23 View Post

the bulb is definitely old (past 2000 hours), but was working just fine.

I was thinking maybe its the bulb as well, but the projector almost sounds like its tripping a circuit breaker (you can hear a click just as it turns off). I didn't really think a bulb could do that. Has anyone experienced that with an old bulb?


Power supply issue sounds plausible.
Anyone have a similar experience?

thank!

my friend had the same issue, turned out to be the bulb.. he was close to 2300 hours.. replaced it then everything worked fine!

I've been running my PT-AE3000 for around 1900 hours now, everything seems fine, i just ordered a spare bulb from eBay just in case anything happens in a month or two.

post #4543 of 4828
Quote:
Originally Posted by brahma23 View Post

the bulb is definitely old (past 2000 hours), but was working just fine.

I was thinking maybe its the bulb as well, but the projector almost sounds like its tripping a circuit breaker (you can hear a click just as it turns off). I didn't really think a bulb could do that. Has anyone experienced that with an old bulb?

I haven't personally experienced this, but sounds like the projector is protecting itself from a bad bulb. Remember, UHP bulbs are consumables, and uneven anode/cathode erosion can lead to premature failure. Did you run it in normal or eco bulb mode for those 2000 hours?

Normal behavior when lamp runtime exceeds 2000 hours (operating instructions p. 27) is to display REPLACE LAMP, does it do that before shutting off? Does the LAMP indicator light red?

If you contact Panasonic, replacing the bulb will be the first thing they suggest, so you might as well do it yourself.
post #4544 of 4828
I'll order/replace the bulb and see if that works.

thanks guys.
post #4545 of 4828
My projector is annoying me even further now. Colour uniformity issue. When the scene is light in colour (and most apparent if the screen is all white), there is a HUGE area on the screen that is slightly reddish compared to the rest of the screen. It covers about 20% area of the screen.

Of course when watching bold-coloured movies or dark scenes you can't see it. It not yet too detectable but I can pin-point the area quite easily... and no, I don't think it's dust blob (unless the dust is the about the height of the entire internal LCD panel)
post #4546 of 4828
Quote:
Originally Posted by David Susilo View Post

My projector is annoying me even further now. Colour uniformity issue. When the scene is light in colour (and most apparent if the screen is all white), there is a HUGE area on the screen that is slightly reddish compared to the rest of the screen. It covers about 20% area of the screen.

Of course when watching bold-coloured movies or dark scenes you can't see it. It not yet too detectable but I can pin-point the area quite easily... and no, I don't think it's dust blob (unless the dust is the about the height of the entire internal LCD panel)

Uh Oh - sounds like what happened to my ae700, heat is damaging one of your components and that discoloration is permanent unless you get an expensive part replaced. I can't remember the specifics.
post #4547 of 4828
^I think it is called a polarizer. Sorry, David Susilo, I don't think there is any cure you can do yourself. Got to send it in.

Although it can happen from just wear and tear, I think the most common reason is from unexpected power cut offs like a black out, circuit breaker trip, or when one of your kids trips over the AC cord and it suddenly gets yanked out of the wall outlet. The cooling fan ceases and the polarizer(s) cook (melt).

This is why I alway put my projectors on UPSes so they have time to cool down in such an emergency.
post #4548 of 4828
Dang it. Just my luck

I actually use UPS for the projector. Now I'm puzzled where the overheating came from. Sigh.
post #4549 of 4828
Sometimes I watch up to 6 hours movie marathon can that cause the overheating?
post #4550 of 4828
Yup, that's my read of this anyways:

"Optical components

If you use the projector consecutively 6 hours every
day, the optical components may need to be replaced
in less than 1 year."

-PTAE3000 owner's manual, p9

I think thee are many variables though:

- ambient room temp
- how often you clean the filters
- eco mode use vs normal
- high fan speed vs quiet mode
- frequency of "marathons"
post #4551 of 4828
Oh well, at least it's in its tail end of its 2nd year and at 1,300 hours.

Ambient temp is usually at 20 Celcius with very good ventilation, filter cleaned every 100 hours and air in the room itself is filtered air.

I gotta check which fan level I use.

Oh, the bulb was in eco mode for the firs 1,100 hours. The last 200 hours were in standard mode. The marathon is usually once a week or at most twicee a week (weekends) and almost never been used during weekdays (an hour here and there if at all)

PS: I just checked, there is no option for fan speed. Am I missing something?
post #4552 of 4828
It is called "high altitude mode" in this series, I beleive.

The air is thinner up there so you need more for cooling, is the theory, but if you don't mind the added audible noise there's no reason not to use it at low altitudes as well, or at least during "marathons", perhaps.

---
post #4553 of 4828
I'll try that. Hopefully the projector doesn't get worse until I can afford to buy another one in about a year or so.
post #4554 of 4828
Out of curiosity, why did you run in eco mode for 1100 hours and then switch? Did you notice a change in performance and felt you needed some more punch due to dimming of the bulb? (which is a guaranteed event, the question is after how long and to what discernible degree it will happen)
post #4555 of 4828
after the 1100 hour point, the picture ocassionally flickers as if I'm watching a 15fps movie ( usually happen after about an hour into the movie and the flicker can last for several minutes, then stop for several minutes, the flickering again, and keep repeating that cycle) and it can only stop flickering in normal mode. So now I'm using the normal mode.

Do you think if I move it back to eco-mode the reddish blob will be less noticable (I guess I can try it out myself this coming weekend... but you may already have the answer)

PS: thanks for all the help, btw.
post #4556 of 4828
When I had what my informal, non -expert opinion diagnosed as a burnt polarizer, years ago in another projector, it was more of a discoloration in the color uniformity along one edge, (L/R/top/bottom, I can't recall) not a "blob" in the center. This is not to say that I know what is your condition for sure, but the acid test for "dust blobs" is to intentionally defocus the main image and attempt to refocus for the dust blobs. I had great success finding them with an impromptu close screen, a piece of white card board I held up close just I'd say 3 feet from the lens while refocusing to find them.

[I think we all have at least some but the small ones go un-noticed until this revealing test I describe, so most of us live in "ignorance is bliss" mode ]


Do you know this technique I speak of and have you verified what you see is not dust blobs?
post #4557 of 4828
I did the refocus from one end to the other, but using the actual screen, which when I refocus I can see dust blobs like there's no tomorrow but none of them is that big and/or in the area of the slight reddish blob

I'll try your method when I get the chance.
post #4558 of 4828
Starting to get some minor lamp flicker with 1900 hours on original bulb. I have run in eco-mode the whole time. The flicker is very subtle, like switching between 100% and 95% brightness. I have noticed that the picture is dimmer than it used to be, so I am going to go ahead and switch to Normal mode and put a new lamp on order.

With my previous AE700 I never saw flicker, it just got dimmer after 2000 hours or so. After I put 2000 hours on my second bulb with the AE700, I had a failure of the blue polarizer, which led me to replace that unit with the AE3000.
post #4559 of 4828
it will go after a while. I had that happen a few times. Switching modes cured it. No need for a new lamp, especially if you are still happy with eco mode. You should have another 1000 hours of life.
post #4560 of 4828
Thanks for the tip. I'm already noticing less flicker now that I went to Normal mode for a few hours.
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