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Other What cheap heats ink paste, need a LOT !!!!

bilabonic

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#1
Hi All

I'm doing an overall of some of my bitcoin miners and the main pcb boards that holds the asic chis (that get hot) are 'sandwiched' between 2 heat large heatsinks.

The board that needs new heat sink paste is about 12"x6" so a large area !!

I also have about 10 or 12 boards to do.

Can anyone recommend a paste that will cover all of this, pretty sure the stuff they use is generic cheap stuff..

Can you buy it in tubs/pots as a a syringe won't get me far...lol

Cheers
 

Spectre

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#2
Hi All

I'm doing an overall of some of my bitcoin miners and the main pcb boards that holds the asic chis (that get hot) are 'sandwiched' between 2 heat large heatsinks.

The board that needs new heat sink paste is about 12"x6" so a large area !!

I also have about 10 or 12 boards to do.

Can anyone recommend a paste that will cover all of this, pretty sure the stuff they use is generic cheap stuff..

Can you buy it in tubs/pots as a a syringe won't get me far...lol

Cheers
120-2. WAKEFIELD SOLUTIONS, Heat Sink Compound, Silicone, Oil Based, Container, 2oz | Farnell element14

Have you considered TIM pads?

You don't need much paste.
 

bilabonic

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#3

Spectre

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#4
What are TIM pads, my lastest miners (Antminers) are 1/4 size and have tiny heatsinks on all the chips that are stuck on using some form of glue/pad/paste??

Quite similar to this in video if you jump to 4mins.

YouTube
Ah... Do you need paste or adhesive? Thermal adhesive isn't too cheap. If you need to sink multiple ICs on one PCB it would be neater to have a stock heatsink and then clamp the PCB to it and use paste but if the PCB doesn't have provisions to provide adequate pressure there will be problems. Is that what you are planning?

TIM pads are conductive materials that don't make a mess and you might be able to cover the whole PCB with one :). Need some clamping force between sink and chip though.

Thermal Pads | Farnell element14
 

bilabonic

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#5
The board that the chips are soldered to already have TIM pad, BUT the otherside needs new paste, whats the cheapest stuff i can remove the old paste, it has even hardened in places ?

Cheers
 

little_pob

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#6
Isopropyl alcohol + lint free cloth is the method I'd use for removing old thermal grease. It's not quite as cheap as distilled water, but is the safer method IMO.

Another method is an electrical contact cleaner, such as this one: Electronic Contact Cleaner - WD-40 Specialist but it's about £7 a can.
 

chookey

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#7
Isopropyl alcohol + lint free cloth is the method I'd use for removing old thermal grease. It's not quite as cheap as distilled water, but is the safer method IMO.

Another method is an electrical contact cleaner, such as this one: Electronic Contact Cleaner - WD-40 Specialist but it's about £7 a can.
Nail polish remover also works well. Wait till the wife /daughter is out :proud:
 

little_pob

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#8
Nail polish remover also works well. Wait till the wife /daughter is out :proud:
It does; but can leave an oily residue. (As will white spirits and cheap vodka.)

Whilst that's probably not a problem here, it's definitely not recommended for anyone overclocking ;)