The Blackmagic Design Spares - Fan - DeckLink 4K Extreme 12G is a high-velocity, low-profile cooling unit designed specifically for the dual-PCB architecture of the DeckLink 4K Extreme 12G. Because this card features two daughterboards and handles massive data throughput (up to 12G-SDI and HDMI 2.0), it generates significantly more heat than standard capture cards, making the fan a mission-critical component.
Thermal Management for 12G-SDI
The DeckLink 4K Extreme 12G utilizes a high-performance FPGA to manage real-time 4K 60p capture and playback. The fan is integrated into a specialized shroud system that directs air across both the primary processor and the high-speed memory modules.
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Active Shroud Cooling: The fan doesn't just sit on a heatsink; it pulls air through the "sandwich" design of the card to ensure that the internal daughterboard (which handles the physical SDI/HDMI connections) remains cool.
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12V DC Operation: Powered directly via the PCIe bus, the fan speed is often dynamically managed based on the card’s internal thermal sensors.
Signs of a Failing Fan
On a high-end card like the 4K Extreme 12G, a failing fan can lead to immediate production downtime:
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Digital Artifacts: Overheating often causes "tearing," green blocks, or "sparkle" artifacts in the 12G-SDI video stream.
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Card Dropouts: The card may suddenly disappear from the Blackmagic Desktop Video Setup utility during a session as the FPGA enters a thermal protection shutdown.
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Mechanical Noise: A buzzing or "dying" sound from your workstation's chassis is a clear indicator that the fan's bearings have reached the end of their life cycle.
Key Features
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Genuine Blackmagic Part: Guaranteed to meet the specific static pressure requirements needed to push air through the card's dense dual-layer design.
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Balanced for Low Vibration: Crucial for high-end workstations where mechanical vibration can interfere with sensitive internal components.
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Direct Plug-and-Play: Features the correct micro-connector for the DeckLink’s PCB, requiring no wire splicing or modification.
Technical Installation Note
Replacing the fan on the 4K Extreme 12G is a more advanced task than on standard cards due to the dual-board construction:
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Board Separation: In some versions of this card, you may need to carefully unscrew the daughterboard to access the fan's mounting points or power header. Handle the interconnecting pins with extreme care.
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Precision Screws: Use a Phillips #00 precision screwdriver. These screws are very small and can easily be lost inside a computer case if you are not working on a clean, magnetic mat.
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Heatsink Clearance: Ensure that no dust "pillows" have formed between the fan and the heatsink fins. If the heatsink is clogged, even a brand-new fan will fail to cool the card effectively.
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ESD Protocol: This card contains highly sensitive 12G-SDI circuitry. Always use an anti-static wrist strap and work on a grounded surface to prevent permanent damage to the FPGA.
Do you currently have the card removed from the workstation, or are you diagnosing the noise while it's still powered on?
