swapnonil

Q: Greyish Smudge marks behind the glass screen.

I have a 21.5 iMac bought in November 2009.

There appears to be numerous greyish smudge marks behind the glass screen on the top left hand corner.

It was not apparent to me at first, but after I started using OMMWriter it became easily visible. I also tried placing a neutral white background like TextEdit and it was easily visible even then.

I have cleaned the screen on numerous occasions and it has not had any effect.

What should I do?

These spots are quite disturbing.

iMac 21.5, November 2009, Mac OS X (10.6.2)

Posted on Jan 15, 2010 10:55 AM

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Q: Greyish Smudge marks behind the glass screen.

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  • by rockjano3,

    rockjano3 rockjano3 Dec 25, 2013 3:55 PM in response to bilbao58
    Level 1 (0 points)
    Dec 25, 2013 3:55 PM in response to bilbao58

    Well i tried it 3 days trial period... well it did not change a lot. The shape of the smudge might changed a little :-)

     

    It only helps if i really turn on the fans which is noisy and probably the fans will die sooner as well so it does not really worth it...

  • by m.bradley1234,

    m.bradley1234 m.bradley1234 Dec 25, 2013 4:01 PM in response to rockjano3
    Level 1 (10 points)
    Dec 25, 2013 4:01 PM in response to rockjano3

    Like I stated I'm not the best at explaining more or less a hands on type but as stated in my encrypted prior post clean it up

    And put it in the market I would

    Hate 4

    Your iMac to be a beautiful money pit I know this you know this and apple definetly knows

    This @

    Pick

    Your battles

    Wisely

  • by rockjano3,

    rockjano3 rockjano3 Dec 29, 2013 7:07 AM in response to rockjano3
    Level 1 (0 points)
    Dec 29, 2013 7:07 AM in response to rockjano3

    Dear Everybody

     

    Now something interesting!!!!!

     

    My gray smudge just DISAPPEARED!!! It was not dust I took apart the LCD unit and cleaned it two times it was something else but no one knew what was it (not even in the service)

     

    What happened is that my HD died in 2-3 days period. First it did not wanted to mount or just sometimes than I found bad sectors on it  more and more, than it did not mount at all and Disk Utility and Drive Genius also reported thet the HD just died. Since it died there is NO SMUDGE on my screen!!!!!!!

     

    I don't know why it might be that the dying HD overheated and that caused the problem. I don't know it is just a guess

     

    But now although I still mourning the HD at least I am happy of the screen.

     

    Question what will happen when the replacement HD will go into???

     

    I will report back soon....

     

     

    Thanks everyone and a Happy NewYear

     

     

    It looked like that now it is perfect:

    gCAM00102.jpg

  • by m.bradley1234,

    m.bradley1234 m.bradley1234 Dec 29, 2013 8:23 AM in response to rockjano3
    Level 1 (10 points)
    Dec 29, 2013 8:23 AM in response to rockjano3

    Rockjano by golly I think you have solved the equation ultimately switching to an ssd would surely reduce your heat consumption internally thus reduce heat I sorbed by LCD thus our closest work around for the LCD issue trust I'm very sure it's a heat issue but temperature wise I am not clear originally I would start up and my smoke screen would appear and after warm up nothing other cases I've heard the opposite so who's going to give it a go

  • by rockjano3,

    rockjano3 rockjano3 Dec 29, 2013 8:29 AM in response to m.bradley1234
    Level 1 (0 points)
    Dec 29, 2013 8:29 AM in response to m.bradley1234

    I already put an SSD in the place of the DVD drive (which was dying as well) But I need more space so I needed a regular HD as well a terrabyte one. I wil buy a new one and put it into. I am pretty sure that the dying HD was overheating. Dust also could be an overheating factor. And that smudge was sign of the overheating. Yes if the mac was started cold it took some minutes to appear. So it was defenatly a heating issue..

     

    rockjano

  • by m.bradley1234,

    m.bradley1234 m.bradley1234 Dec 29, 2013 8:43 AM in response to rockjano3
    Level 1 (10 points)
    Dec 29, 2013 8:43 AM in response to rockjano3

    I'll bet as soon as the. 1tb is removed there will be a significant improvement but I question how much the machine itself has suffered internally

  • by rockjano3,

    rockjano3 rockjano3 Dec 29, 2013 8:48 AM in response to m.bradley1234
    Level 1 (0 points)
    Dec 29, 2013 8:48 AM in response to m.bradley1234

    It could not be better than now.

    The smudge really GONE!!! it is nowhere to be seen. NOTHING...NADA...

    It is as clear as it should be

     

    The 1tb is still inside just does not work.. since it died.

     

    The question is if I put a new one will it come back??? I need a HD there I need more than a 240Giga SSD.

     

    Otherwise the mac seesm to work well...

     

    I am cautiously optimistic :-)

     

    rockjano

  • by m.bradley1234,

    m.bradley1234 m.bradley1234 Dec 29, 2013 8:52 AM in response to rockjano3
    Level 1 (10 points)
    Dec 29, 2013 8:52 AM in response to rockjano3

    actually if im not mistaken even though the sectors arent reading efficiently the hard drive would still produce heat but i could be wrong so dont hold it against me

  • by rockjano3,

    rockjano3 rockjano3 Dec 29, 2013 8:57 AM in response to m.bradley1234
    Level 1 (0 points)
    Dec 29, 2013 8:57 AM in response to m.bradley1234

    Yeah I will take it out...

     

    But the thing is that is really could not be much better than now...

     

    I only see a very-very littel of it. But only if I see it for a longer time and concentrate.

     

    And the mac operate for 5 hours so it must be warmed up by now....

     

    rockjano

  • by m.bradley1234,

    m.bradley1234 m.bradley1234 Dec 29, 2013 9:00 AM in response to m.bradley1234
    Level 1 (10 points)
    Dec 29, 2013 9:00 AM in response to m.bradley1234

    so to the core of the apple literally i would still advise to replace the machine my concern lay with what else could have been effected internally stated previously for what reason the bluetooth module sits very near the hd along with other vital components and possibly over heating of cpu which may not be visibly noticable but i would check benchmark scores etc. for this model and im sure that that this discussion is being overviewed hey yeah you thats reading this from cupertino infinity i think you should make this exact denying the fact is totally a discredit towards the company and a unexceptable abuse towards your supportive customers and honestly i take it you feel we should just be excepting  and understandable but why not return the favor smh ijs

  • by m.bradley1234,

    m.bradley1234 m.bradley1234 Dec 29, 2013 9:10 AM in response to m.bradley1234
    Level 1 (10 points)
    Dec 29, 2013 9:10 AM in response to m.bradley1234

    P.S. i have been totally been deterd from purchasing this model imac ever again as the former owner of the 27" 3.4GHz 1G Radeon HD March 2011 32gb model upgraded w/ kingston memory at less than half of company asking for cto  because i refuse to pay twice the amount for apple to put its stickers on my memory for an inflated upgrade i would'nt be surprised if i see an apple  logo being pulled by a blimp with a chimp throwing bananas out its cockpit and they think im crazy hahahahahahahahahahahahahaha

  • by rockjano3,

    rockjano3 rockjano3 Dec 29, 2013 9:13 AM in response to m.bradley1234
    Level 1 (0 points)
    Dec 29, 2013 9:13 AM in response to m.bradley1234

    Yeah no more iMac for me either... I will buy mini...that is a better option now...

     

     

    Benchmark semmes to be perfect. Bluetooth works no problem...

     

    Everything works... the machine is better than ever...

  • by m.bradley1234,

    m.bradley1234 m.bradley1234 Dec 29, 2013 9:29 AM in response to rockjano3
    Level 1 (10 points)
    Dec 29, 2013 9:29 AM in response to rockjano3

    i would like to dedicate one of my favorite song to you cupertino infinity loop / in the air tonight by phil but to act as if you cant understand why is questionable of prestige lol metric @ never blame those who dont know any better but focus on those that  have been provided the chance of choice and blatently disregarded it

    Screen Shot 2013-12-29 at 11.16.08 AM.jpg

  • by surda34,

    surda34 surda34 Jan 5, 2014 3:41 PM in response to swapnonil
    Level 1 (0 points)
    Jan 5, 2014 3:41 PM in response to swapnonil

    and I this problem with an iMac 21,5 mid 2012 and has already passed the warranty, what to do?what.JPG

  • by rockjano3,

    rockjano3 rockjano3 Jan 5, 2014 4:37 PM in response to surda34
    Level 1 (0 points)
    Jan 5, 2014 4:37 PM in response to surda34

    Your picture is so blurry I cannot see anything.

     

    Please make a better picture...

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