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Hello everyone,
I’ve been having some sensors on my logic board not working at full capacity and also I feel the processor is overheating and that’s why fans running at 6100 rpm.
I thought I would clean some of the dust so I opened up the heat sink and this is what I saw. You think the compound spilling like this is normal? It’s almost touching the pins.
Questa è una buona domanda?
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Given the age of the system it does make sense to refresh the thermal paste as part of the cleaning process. Clearly your logic board is quite dusty! So it was time.
Use a soft paint brush to scrub lightly the surface of the logic board to loosen the dust and then use a can of can’ed air to blow the dust away. Use short blasts and don’t tilt the can to much as you don’t want the liquid to spray out. You’ll also need to dust out the heat sink fins and fans.
As for refreshing the paste here is what I would use: [prodotto collegato mancante o disabilitato: IF179-010] and to properly clean the surfaces I would use Arctic Silver ArctiClean or I would use isopropyl alcohol 85% or better and then toluene to finish the task.
Unlike Apples paste Arctic Silver is slightly conductive so its important to not be as messy as the assemblers of your system where. Here’s a good guide on how: Come applicare la Pasta Termica
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Elegant answer Dan! Thank you!
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It's slightly more than it should be but nothing serious, it seems thermal paste was still in good shape and giving proper thermal bridging.
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You think some of it sticking to those pins would damage them?
No, all thermal pastes are non-conductive..if they weren't they would be very dangerous. Sometimes Apple's untouched logic boards have thermal paste spreading into capacitors too.
Hold on here! Some thermal pastes are non-conductive others can be! The paste Apple uses is not conductive and also not very good! You will need to clean it all off and apply a fresh coat of good paste. You really can't re-use the paste as it dries out so it won't flow back as it should.
@danj C'mon..please..name a single one that's used for heat sink purposes and is conductive. Not to talk about that used in this case..if it was conductive the CPU would have been fried one second after pushing the power button. That's FUD, in bold characters.
Take a read: Liquid Metal Explained: How it works, why it fails (and how to use it) Thats the worse! As it will also damage aluminum parts and will slowly pit even copper.
But even some of the newer paste's which have high qualities of carbon or copper or silver within them are between semi and full conductiveness. These tend to be more capacitive in nature which when left going across the surface SMT chips can mess them up. Thats why Arctic Silver makes the statement here : Not Electrically Conductive
FYI - I don't recommend using liquid metal thermal pastes at all! They are very tricky to apply correctly and as they are fully conductive can short out your chip and your system. You don't gain enough improvement to be worth it.
I never stated the paste Apple uses was conductive! Its just junk! Other pastes are much better! Read again what I wrote below.
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