Easy heatsink & fan replacement guide for Decklink cards

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Harri Järvinen

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Easy heatsink & fan replacement guide for Decklink cards

PostThu Feb 06, 2020 4:02 pm

This is for all decklink etc cards that use Blackmagic Design's poor quality aluminium heatsink & loud fan. Do this at your own risk etc, for getting a better cooling and less noise.

Only requirement is approx. 60mm spacing between mount points. Measure that your card has this.
I believe some of the high end Decklink models have a larger heatsink size.

Pictures can be found here:
https://drive.google.com/open?id=1NXhk-4oTKn0ArnoqsECgzfssJvMCuljH

1) buy Enzotech SLF-40mm copper heatsink (30db fan is included)
http://www.enzotechnology.com/slf_40mm.htm
This is heavy, high quality copper heatsink. It fits directly onto the card without any modification.

2) Remove old heatsink. Install new heatsink onto the card using the silicon paste included with the Enzotech heatsink, or something better like Noctua thermal paste.

3) Fan connector needs to be changed from old fan to new fan. This can be done using 3M "Scotchlock" UY2 connectors without the need to peel the cable insulation using wire strippers:
https://www.youtube.com/watch?v=4argkJLs9Qg
In my case I just soldered them because I did not have Scotchlocks and the store was closed.
Guide: Red wire goes to red wire. Black wire goes to black wire. Yellow wire goes to white wire.

4) Mount the card to computer and test that the fan spins. It is too quiet to hear this fan over the GFX-card fan, so I tested the fan carefully with tip of finger.

5) Should be done at this point. Please leave comments and I will update the guide if needed.
Last edited by Harri Järvinen on Wed Feb 12, 2020 12:28 pm, edited 3 times in total.
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Kays Alatrakchi

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Re: Easy heatsink & fan replacement guide for Decklink cards

PostThu Feb 06, 2020 4:35 pm

Thank you for this, but is it necessary? Have you had issues with the card overheating in the past?
>>Kays Alatrakchi
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Harri Järvinen

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Re: Easy heatsink & fan replacement guide for Decklink cards

PostThu Feb 06, 2020 7:33 pm

Kays Alatrakchi wrote:Thank you for this, but is it necessary? Have you had issues with the card overheating in the past?


No issues, but the fan was really loud and it bothered me.
Seen some videos etc of people replacing the heatsink and fan so I wanted to share this.
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dakahler

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Re: Easy heatsink & fan replacement guide for Decklink cards

PostMon Oct 19, 2020 7:47 pm

For anyone else who finds this thread, here's the solution I came up with. I wasn't able to find the heatsink mentioned above, so just replaced the fan with a quieter one. I chose a Noctua 60mm PWM model:

amazon.com/gp/product/B00VXTANZ4

I paired this to a SATA power adapter, because I just want it to run at full speed all the time. It's still much quieter than the original fan:

amazon.com/gp/product/B0837PKS8H

I attached it with 2 6" zip ties through the holes at the top and bottom of the original heatsink:

amazon.com/gp/product/B07P7MRK9Y

This is on my quad hdmi card, but it looks like it would fit similarly on others.

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TonyLewis

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Re: Easy heatsink & fan replacement guide for Decklink cards

PostTue Oct 20, 2020 3:49 pm

Here is the heatsink from someone other than manufacturer, at a signiificantly lower cost:

http://www.xoxide.com/enzotech-slf40low ... tsink.html
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mirekti

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Re: Easy heatsink & fan replacement guide for Decklink cards

PostWed Jan 13, 2021 2:16 pm

Harri Järvinen wrote:
1) buy Enzotech SLF-40mm copper heatsink (30db fan is included)
This is heavy, high quality copper heatsink. It fits directly onto the card without any modification.


Could this fan be replaced with something like NF-A4x20?
Is the fan 5V or 12V?

Thanks and cheers.

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