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Too bad... my 2011 iMac 27" has this exact problem. I watched videos how to remove the LCD and clean in-between the layers of it... didn't seem worth it to do at the time. Now I can't even run Mojave on it so will probably go in the trash within a year LOL.

Use Mojave Patcher Tool an keep your Mac!
 
Good. Hopefully this would improve the quality of future MacBooks.
[doublepost=1543483339][/doublepost]I'm asian. When I bought my first MacBook (it was a 2007 Pro), I bought a keyboard protector as well. It ended up creating a texture on the matte screen which was very visible when the screen is off. I ended up not using it and not buying those again for subsequent MacBooks.

You are right, I bought one as well and it created one as well after closing lid so I had to place one of those 3M screen cloths in there as well to avoid that issue. Placing the 3M screen cloth on the keyboard protector prevented that issue from happening.

Unfortunately we some Apple products don't come perfectly manufactured without some small quality issues. One just has to figure out a way to prevent these issues from happening until Apple fixes these issues.
 
dust filter wouldn't really make any sense. It would need to be so tiny it would get clogged very quickly and the computer would end up overheating. At least by blowing dust throughout the machine there is plenty of room for it to spread out LOL. Really what they should do is stop using pentalobe screws so that people can take off the bottom and blow it out from time to time
 
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My 2012 iMac had this exact issue, I contacted service and they asked a high price to fix it.I complained to apple consumer relations that this is a design issue and that since they made the panel fixed with the glass and there is no way to clean it they should replace it. After a lot of complaining they actually issued a free replacement of the panel.
 
You are right, I bought one as well and it created one as well after closing lid so I had to place one of those 3M screen cloths in there as well to avoid that issue. Placing the 3M screen cloth on the keyboard protector prevented that issue from happening.

Unfortunately we some Apple products don't come perfectly manufactured without some small quality issues. One just has to figure out a way to prevent these issues from happening until Apple fixes these issues.
That imprint from the silicone keyboard 'skin' / protector has always been around. Cleaning the screen removes it. Placing a sheet of fabric in between when the notebook is closed and carried in its case helps prevent it.

The silicone skin is always on my keyboard for my Mac Pro - except when I want to type a long document. The skin does interfere with typing - sometimes I find keys not pressed hard enough and characters not in the document. Then, spelling auto-correct makes things weird.
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Some of us have dustier houses than you do, perchance.

Whenever I've opened up a computer which we've owned for any length of time, it generally does contain a fair bit of dust. But this has been true of both Macs and non-Macs.
Fans in computers are meant to cool electronics. However, those parts are producing electrostatic attraction of the dust that passes through the computer.
 
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The problem appears to be that people were/are being charged $600+ for repairs that should have been included in the warranty as it was happening within months because there was no filter, and when investigating this the firm found that this has been highly persistent for several years, so the older models were included as well.

Ah, thank you for clarifying the details of the case. This definitely changes my perspective on the issue and would explain why older models were included, since Apple likely denied warranty claims or charged for repairs when those items were still new.

It will be interesting to see what happens.
 
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Some of us have dustier houses than you do, perchance.

Whenever I've opened up a computer which we've owned for any length of time, it generally does contain a fair bit of dust. But this has been true of both Macs and non-Macs.
Dust accumulation is also affected by how long and often the computer is up and running - and yes, by the amount of dust / pet hair in the environment. Someone who runs their computer 8 or more hours per day, not unusual for desktop users, has much more issues than someone who runs a computer one or two hours every day or so. That is the case for any computer. I'm on my fourth iMac of the current form factor since buying my first about 13 years ago, and have replaced every one of them after around 3 years due to excess fan noise and overheating issues. I've never noticed screen clouding issues, but the fan noise occurs after 2-3 years. It's an issue with how the all-in-one iMacs are cooled and ventilated. If they don't want to filter the vents, they should at least make it easier to open up and vacuum the silt occasionally. As it is, iMacs are a huge pain to open up and clean, and the vents are so thin and small as to make external blowing/vacuuming from outside the case ineffective. I think this is less of an issue with laptops, which generally aren't in operation for many hours per day (there are exceptions, for sure) and aren't expected to be of premium value more than 3-4 years. If properly ventilated and cleanable, a quality desktop should be useable for 6 or more years - even more than that if upgradeable and easily serviceable (Apple?).
 
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Maybe, if this is a problem, that the people making this claim needed to keep their work area cleaner in the first place?

Dear Apple,

I live next to a dirt road and my Mac is being affected by it. I'm not responsible for what I may or may not do, so what are you going to do about it?
So people who live in the country can't own an iMac now, wonderful solution.
 
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Is it in any way helpful? I'd expect them to get plugged and need cleaning/replacement and end up being just one more thing to deal with.
That's exactly what happens. I've had several laptops with a sort of filter on it. Usually, you have a heat sink and a fan or two and then there's a grill to the outside, so not exactly a filter as such in the sense that a filter would be expected to remove all the dust, just a grill that gets caked up.
It's a fairly common problem on PCs in my experience, that they suddenly switch off seemingly at random and the problem is more often than not clogged vents.
The quick fix is just to blow through them from the outside but it's better to open them up and clean them properly of course.
I had a 24" iMac and when I opened that up, it was caked with very fine dust inside particularly on the fan blades.
I've always imagined the Macbooks being less prone to this as they are essentially fanless- that is some of them have fans but I've rarely heard them work.
I think the aluminium is supposed to do most of the cooling, but it's still odd not to be able to open up the machine to clean it, change the PROM battery and put some fresh thermal paste under the heatsink on the mother board every so often.
 
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Common enough that it's been discussed on this very forum going back over 8 1/2 years: https://forums.macrumors.com/threads/imac-27-black-spots.861355/
Yes, probably around the time the first generation of thin form factor all-in-one iMacs began manifesting the problems. I know, as my first thin form iMac had the issue around that time.
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Im checking old threads in this site and that dust problem occurred since 2012! So far, all iMac series have dust issue. I have no reports about iMac Pro.
The iMac Pro's, especially the old cheese graters, were more generously ventilated and user serviceable / upgradeable. They also aren't of the all-in-one design, so one didn't need to remove and unglue the screen to access the internals. They may have even had air filters, but I never owned one, so don't know.
 
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WHERE do you leave your notebook that ants can get into it?
the mpb is always on my working table in my study room. I didn't bring it to any other places in a few months time.
my understanding is the screen should be full sealed. it should not have such a big gap/hole to allow bugs crawl into it.

I could understand that dust appears in iMac and MBP body, because there are fans inside it. and the windows should be big enough to allow air-flow. my iMac got repaired twice, due to the damage of graphic chip, which is caused by the heat and the heat is caused the malfunction of a fan, and the malfunction is caused by the dust, as technician said. It caused me 200 bucks for each repair. I don't want to complaint about it.
 
Most all laptops don’t have dust filters, I’ve repaired many laptops PCs and a few Macs and none had any dust filters.

Laptops will build up with dust and heat sink compound will require replacing over time and Apple have basically made there laptops so the average user can’t open it up so easily and clean it out.

Also the screens are behind a glass front that are not laminated to the screen like the early iPhones that over time dust would get in.

Apple could just repair for free but can’t as they have design the laptops not to be modular and require basically replacing the entire laptop, another stupid move that is going to cost Apple money, so they try the BS move and they have been getting away with it too easy.

In the UK any equipment has to by law last a reasonable amount of time regardless of warranty, if fails the customer by law is entitled to it be repaired free of charge or a partial refund depending on how much they have had use of the equipment before it failed.
 
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As others have said, the real issue is not the lack of fans but Apple's obsession to do everything they can to make it hard to open and service a device ourselves. Adding tiny filters that can't be cleaned or replaced by the user would only make the situation worse. The filters themselves would reduce the already limited airflow and it would only get worse over time as the they get full of dust.

I open and clean my 2011 MBP about once a year, it takes me a few minutes and I'm sure it helps with the noise and temperatures. Knowing that I was never going to be able to do that easily with any of the Macs currently sold was a determinant factor in my choice to build a pc instead. Not only does it have air filters, I can also open the whole thing and clean it very easily.
 
Here in Colorado where it's very dry, dust is a part of life especially when its windy. Throw in 2 cats and 2 dogs there no way to stay dust and pet hair free. Just checked my 2015 mbp, dont notice any dust under the screen but I don't use it much at all.

Being a pig is not a warranty issue.
 
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Apple is facing a class action lawsuit that accuses the company of failing to install vent filters in MacBooks and iMacs, leading to lower processor speeds and screen smudges from trapped dust, which result in expensive repairs for consumers.

News of the lawsuit was published today by Hagens Berman, the firm handling the case.

imacscreensmudges.jpg
According to the lawsuit, some iMac, iMac Pro, MacBook Pro, MacBook, and MacBook Air users have experienced dark smudges and spots on the interior of the screens of their computers as well as excessive slowness due to heating issues because of the lack of a filter in these devices.Dust accumulating from the air allegedly impacts the screen and the motherboard, causing spots on the display and heat regulation issues.

Hagens Berman says that Apple has been charging customers with machines out of warranty upwards of $600 to fix these problems. The lawsuit says iMac and MacBook models from 2013 to 2018 are affected.

Several plaintiffs are named in the lawsuit, including a photographer who was plagued by dark spots on her Mac's display, a user who had smudges on his iMac who was required to pay $600 for a replacement after five months, and a third iMac owner who saw dark smudges soon after making a purchase and subsequently had his display and motherboard replaced multiple times, leading to high repair bills.

The class action lawsuit is seeking monetary compensation for Mac owners, including compensation for screens that "did not perform as advertised," reimbursement for out-of-pocket repair costs, and compensation for those who sold their computers at a loss due to dark smudges on the display or poor performance.

Article Link: Apple Facing Class Action Lawsuit Over Lack of Filters in MacBooks and iMacs Causing Trapped Dust

Apple should countersue for abusing these poor Macs by using them in filthy homes. How did this manage to get to a lawsuit? Can we do a similar one for our cars? "You say there's a cabin filter, but my car got dust inside?
 
Another frivolous lawsuit in our over litigious society. We should sue them for not making them waterproof so I can’t use it when I’m in the bathtub. I am so tired of the greed, at the individual and institutional level. It has become all about money, all the time. I have owned many MacBooks and this has not been a problem. The dust gets into my towers, so I dust them out.

How are you supposed to get dust out of an iMac that's sealed shut?
 
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3 years of heavy use on my MBP. Haven’t seen this issue. Doesn’t really seem that dust would cause the screen issue. It’s not like its a rear projection system with dust getting caught between the film strip and the screen. Is there room for dust to get in between the LCD panel and the backlight panel? I thought the way they were sandwiched together, that wouldn’t be able to happen.
 
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