The Blackmagic Design Spares - Pocket Cinema Camera 4K (PCC4K) - Fan Replacement Kit is the essential thermal management component for the PCC4K. While the 4K model generates slightly less heat than the 6K, it still requires active cooling to prevent the sensor from overheating, which causes "thermal noise" (grainy artifacts) in your shadows and eventually leads to system shutdown.
Kit Components
The OEM fan kit for the PCC4K typically includes:
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Brushless Blower Fan: A low-profile, ultra-quiet fan designed to fit the specific curvature of the Pocket chassis.
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Vibration Isolation Mounts: Small rubber bushings that prevent the fan's rotation from creating mechanical noise that the internal microphones would otherwise pick up.
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Mounting Screws: Specialized small-gauge screws to secure the fan to the internal frame.
When to Replace the Fan
Since the fan is the only mechanical moving part inside the camera, it is the most likely component to wear out over several years of use.
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Grinding or Rattling: If the camera sounds like it has "sand" inside it, the ball bearings in the fan have failed.
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Sudden Silence: If you no longer feel air moving through the top vents and the camera body feels unusually hot to the touch.
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"High Temp" Warning: If the camera displays a thermal warning on the LCD and shuts down within minutes of booting.
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Intermittent Operation: If the fan only kicks in when you tap the camera body—a sign of a dead spot in the motor or a loose connector.
Technical Installation Note
Repair Level: 2 (Moderate). You will need to open the camera, but you do not need to desolder any components.
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Back Plate Removal: You must remove the rear chassis (the part with the LCD). Warning: The LCD ribbon cable is extremely short. Do not pull the back plate away quickly; tilt it carefully and disconnect the ribbon cable first.
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Clear the Airways: While the camera is open, check the intake (bottom) and exhaust (top) grills. Over time, these collect lint and dust. Even a brand-new fan will fail if the airflow path is blocked.
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Connector Seating: The fan connects to the Main PCB via a tiny 3-pin or 4-pin "Molex" style connector. Ensure this is clicked in fully; if it's loose, the camera’s software may think the fan is failed and prevent the camera from recording.
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Avoid Pinched Wires: When reassembling the two halves of the camera, ensure the thin fan wires are tucked into their designated channels so they aren't crushed by the chassis screws.
Pro-Tip: The "Vacuum" Test
Before buying a new fan, try using a vacuum hose or a can of compressed air on the top exhaust vent while the camera is off. Occasionally, a single piece of grit or a hair gets stuck in the blades, preventing them from spinning. If a quick blast of air clears the obstruction and the fan spins freely again, you might save yourself a teardown!
Is your fan making a loud physical noise, or has it stopped spinning entirely?
