The Blackmagic Design Spares - Power Module - 12VDC 225W is a heavy-duty internal power supply unit designed for the most power-intensive hardware in the Blackmagic lineup. Providing a massive 225 watts on a 12V DC rail, this module is engineered for "Enterprise" class devices that feature high-density FPGA processing, extensive 12G-SDI crosspoints, or large arrays of physical controls.
High-Current Performance
With a 225W rating, this module can deliver approximately 18.75 Amps of current. This high capacity is necessary for devices that manage significant heat dissipation and complex mechanical tasks simultaneously.
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Voltage: 12V DC (Standardized for high-end broadcast logic).
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Wattage: 225W (High-overhead for mission-critical reliability).
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Input: Universal AC 100V–240V.
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Efficiency: Designed for 24/7 "always-on" environments like broadcast master control rooms and live production trucks.
Compatible Hardware
This power module is typically found in Blackmagic's "flagship" 2RU and larger devices, where a 60W or 150W supply simply wouldn't provide enough current:
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ATEM 4 M/E Broadcast Studio 4K: The massive processing requirements for 80+ inputs and multiple M/E rows require this level of power.
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Smart Videohub 40x40 (12G-SDI models): Routing forty 12G-SDI signals creates significant thermal and electrical load that requires a high-amperage supply.
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Teranex AV / Express: Standards converters that perform intense real-time pixel processing and frame rate conversion.
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Universal Videohub Frames: Used in modular router frames to power multiple I/O cards.
Symptoms of Failure
Because this module handles such high current, failures can be more dramatic than in smaller units.
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Thermal Shutdown: If the module's internal cooling or capacitors degrade, the unit may shut down under load (e.g., when all 40 SDI ports are active).
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High-Frequency Whine: A common sign of aging capacitors in a 225W supply, indicating it can no longer provide "clean" DC power.
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Fan Failure Triggers: In some units, if the power module's voltage rail dips, the system fans may spin at 100% (failsafe mode) or stop entirely, leading to a secondary overheat on the Main PCB.
Key Features
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Broadcast Grade: Low-ripple DC output to ensure no electrical noise is introduced into the SDI video signals.
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Active/Passive Hybrid Cooling: Often features its own integrated heat sinks and is positioned near the unit's main fans for maximum longevity.
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Redundant-Ready: In many 225W devices, these modules are designed to be paired with a second module for power redundancy.
Technical Installation Note
Replacing a 225W power module is a high-level repair that requires strict adherence to safety protocols.
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Lethal Charge Warning: The large primary capacitors in a 225W supply can store a lethal electrical charge for a significant amount of time. Wait at least 15 minutes after unplugging the AC source before opening the unit.
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Terminal Integrity: Unlike smaller modules with plastic clips, 225W units often use screw terminals or high-density spade connectors for the 12V output. Ensure these are tightened to the correct torque; a loose connection at 18 Amps can cause electrical arcing and fire.
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Mounting and EMI: Ensure all mounting screws are used. This module generates a significant electromagnetic field; the metal chassis serves as both a heat sink and an EMI shield.
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Airflow Check: When replacing the module, inspect the internal chassis fans. A power module failure is often preceded by a fan failure that caused the supply to bake in its own heat.
Are you replacing this in a Videohub 40x40 or an ATEM switcher? Knowing the specific device can help determine if there are additional calibration steps required.
