The Blackmagic Design Spares - Camera URSA Mini Pro G2 - PCB Main is the primary motherboard and the "brain" of the camera. It is a high-density, multi-layer circuit board responsible for all image processing, codec encoding (Blackmagic RAW and ProRes), and hardware synchronization.
Because the G2 is a high-frame-rate machine (capable of 300 fps in certain modes), this board is engineered for extreme data throughput and thermal efficiency.
Core Functions
The Main PCB coordinates every subsystem within the camera:
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Image Processing: Houses the specialized FPGA that converts raw data from the 4.6K sensor into viewable images and recorded files.
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Codec Management: Handles the real-time compression of Blackmagic RAW and Apple ProRes to the CFast 2.0 or SD UHS-II slots.
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I/O Management: Controls the 12G-SDI inputs/outputs, XLR audio preamps, and timecode/genlock synchronization.
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System Power: Regulates power distribution from the V-Mount/Gold Mount battery plate to the sensor, cooling fans, and external accessories.
When to Replace the Main PCB
Replacing the Main PCB is a major "Level 4" repair, usually reserved for critical system failures where modular component swaps (like a new SDI board or USB-C board) have failed:
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Processor Failure: The camera fails to boot, hanging on the splash screen, or the internal cooling fans spin at 100% indefinitely with no image output.
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Storage Controller Issues: Both CFast and SD slots fail simultaneously, and external recording via USB-C is also non-functional.
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Kernel Panics/Freezing: The camera randomly locks up during recording or playback, even with verified media and stable power.
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Severe Electrical Damage: Damage caused by a power surge or "hot-plugging" faulty SDI accessories that bypass the protection diodes.
Key Features
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G2 Specific: This board is not interchangeable with the original URSA Mini 4.6K or the URSA Mini Pro (G1). It features specific high-speed memory and processing chips required for the G2’s 300 fps capabilities.
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OEM Reliability: Built with professional-grade components designed to withstand the heat generated by 12G-SDI processing.
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Integrated Audio: Contains the high-fidelity Analog-to-Digital converters (ADCs) for the professional XLR inputs.
Technical Installation Note
Warning: This is the most complex internal repair for the URSA Mini Pro G2. It involves disconnecting over a dozen delicate ribbon cables and managing thermal interface materials.
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Firmware Mismatch: A new Main Board may ship with "factory-only" firmware. After installation, you must connect the camera to a computer and use the Blackmagic Camera Setup utility to update or re-install the current public firmware.
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Thermal Management: The main FPGA requires a specific thermal pad or high-grade thermal paste to connect to the internal heat pipe. If this contact is not perfect, the board will overheat and fail within minutes of being powered on.
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Ribbon Cable Handling: The ZIF (Zero Insertion Force) connectors on this board are extremely fragile. Use non-conductive tweezers and ensure every ribbon is seated perfectly square before locking the tabs.
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Static Safety: You must work on an anti-static mat with a grounded wrist strap. One static pop to the FPGA can instantly turn this expensive spare part into a paperweight.
Important: Before ordering, confirm that your issue isn't caused by a faulty Interconnect PCB or a damaged Power PCB, which are smaller, less expensive boards that feed into the Main PCB. Is your camera failing to power on at all, or is it powering on but failing to record?
