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Released June 2012 / Core i7 processor with Turbo Boost / Up to 1 GB GDDR5 Video RAM

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Bad Smell coming from MacBook Memory patches.

Hello people,

I’m battling with some bad smell / stink with my Mid 2012 Unibody 15” MacBook Pro since quite some time now.

I’ve read of the body odor smell problem, but not quite sure if that is it. But similar. Mostly the issue appears with high load/temperatures

As of now I’ve changed the old battery. It was time and getting really hot in there. After changing the Temperatur dropped by 20*C

I‘ve changed the thermal paste, since I read it causes the smell.  And it was old and time too.

Today I am changing the fans since bearings are making noise and can cause smell when wearing out.

Next I would like to clean keyboard/backlight since there’s all the gunk of 10years of usage which definitely will not smell like unicorns.

And I will replace the DDR3 memory modules since these smell too. Which brings me to my question:  Can anyone give me some guidance on what is shown in the pictures?

It is some piece of foam(?) and is located right on top and below the ram modules. Pressing firmly into the modules.  and it is going to peel off.

They smell pretty bad. (I’m wondering if they cause the smell or the memory modules cause the smell)

My guess is, that they are some form of heat spreader and begin to smell when getting too hot.

I think that the system got too hot at some point in the past decade and the materials just wore of.

Could they be the cause of the smell and can they be fixed, replaced or safely removed?

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I think your on a bit of a snipe hunt. The bottom cover insulator is not likely your issue as it would have been blistered from heat damage which it isn’t. Thats also true with the the uppercase insulator as well.

The smell you are searching for could be food caught under the keys. Do you remember having a spill or dripping food into the keys?

There could be an overheating component within the logic board that would offer up an acrid smell.

I would recommend you get a good thermal monitoring app like TG Pro so you can better monitor your systems thermal sensors which will help focus you on where you need to look or what needs replacing.

So, put your system back together and lets get some better data. Once you encounter the smell issue take a snapshot of TG Pro main screen make sure you capture all of the sensors (adjust the window size so you don’t need the scroll the window to see them all), post it here for us to see Adicionar imagens a uma pergunta já existente

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Hey Dan,

Thanks a ton for your answer. You are absolutely right. It drives me crazy.

I will definitely try TG Pro, good idea!.

The Logic board doesn’t show signs of overheating and doesn’t smell. But still could be.

But the bottom cover insulator does smell pretty bad. Could it be, that the insulator adopted that smell?

Otherwise I would suspect, it might be the glue. I’ve just treated the insulator and other parts with ethanol to get rid of maybe smelly bacteria.

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@steffmueller - Any luck with TG Pro?

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