Replacing Thermal Paste on DellXPS 15z

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paulmorny

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Oct 14, 2012
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Hi,

I have an overheating issue and im planning on removing the thermal paste and replace with new paste and use compressed air to blow out the fan, i havent done this before but after looking at it im worried that removing the paste on the motherboard part might damage it.

Look at the photos, i know the paste should be on the square part but it seems to be down the side of that on the part that look like tiny metal strips, will scraping these do damage, is it already bad there is paste on them?
 

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Macboatmaster

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I would recommend that you use either a specially made product such as
http://www.arcticsilver.com/arcticlean.htm

articlean there are others, or you can use

all the instructions are here
http://www.arcticsilver.com/instructions.htm

both for cleaning and for applying

Possibly a little too much has been applied and that is why it has squeezed out across the electronic contacts, rather than being within the pad area.

You must not scrape with anything metal, because of the area it has covered I recommend a cleaner first
You can use Isopropyl alcohol but by the time you have found a supply in the quantity you want it is easier to buy the specialist product.

Additionally if you do use the alcohol you must ensure it has no added ingredient which may coat the surface with a substance after the alcohol has evaporated.

Care and gentle are the master words, especially in the case you have

When applying the new thermal compound you require only about the size of a HALF to 3/4 of a grain of rice.
You then spread this using a credit card edge or similar
NOT your finger the natural skin oils will adversely effect the purpose of the paste.

Many people think that the paste is necessary to cool THAT is incorrect in essence - there are few better conductors of heat than metal to metal - however the MINUTE imperfections in the surfaces are what lessens that process and the thermal compound is to fill those MINUTE imperfections and that is the purpose of it, as explained below

The purpose of TIM is to ensure all the microscopic pits and valleys in the CPU die and heatsink mating surfaces are void of heat trapping air, maximizing surface to surface contact. Any excess is too much and gets in the way, and can actually be counterproductive to the heat transfer process.


All the instructions you could possibly need are on the Artic link even to the extent of the exact processor etc .

If you have any questions please do not hesitate to ask

NOTE PLEASE
I think that laptop has an Intel i7 (SandyBridge) processor in which case it is the spread method that I described
Please check and then click on the correct processor on the Artic link.

Finally when using the compressed air spray, hold the fan blades, with something to stop them turning, they can spin at such high speed that you will destroy the bearing bush. Normal revolution say 2500 rpm - air spray revolution can be ten times that
 

Macboatmaster

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paulmorny

It is now some three days since you asked for advice re thermal paste and your laptop
I posted a comprehensive response for you
How are you progressing please
 
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