Greyish Smudge marks behind the glass screen.

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

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:

g

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

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

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

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

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

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

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

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

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...

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

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

Your picture is so blurry I cannot see anything.

Please make a better picture...

try a better picture