Blackmagic Design Spares - Power Module - 12VDC 150W

The Blackmagic Design Spares - Power Module - 12VDC 150W is a heavy-duty internal power supply designed to provide a high-amperage 12V rail for professional broadcast hardware. Delivering 12.5 Amps of current, this module is found in equipment that requires significant power for processing high-bandwidth video (like 12G-SDI) and managing active thermal cooling systems.

Technical Performance

This is a high-efficiency switching power supply (SMPS) designed for 24/7 reliability in machine rooms and mobile units.

• Output: 12V DC at 12.5A.

• Wattage: 150W (High-overhead for stability).

• Input: Universal 100V–240V AC.

• Protection: Features integrated circuitry to protect against over-voltage, over-current, and short circuits.

Compatible Hardware

This specific 150W/12V configuration is the "engine" for many of Blackmagic's mid-to-large rackmount devices, including:

• Smart Videohub 40x40 (Earlier 6G Models): Powers the extensive crosspoint matrix and 5" LCD.

• HyperDeck Studio 12G: Provides the high current needed for 12G-SDI processing and high-speed SSD recording.

• ATEM Production Studio 4K: Used in the main chassis to power the switcher's logic and internal video processing.

• Teranex Express / AV: Supports the intense real-time math required for standards conversion and frame synchronization.

Signs of Failure

Because this module handles a large amount of current, failures often manifest during peak loads:

• Intermittent Signal Loss: The device reboots or "glitches" when multiple high-bitrate signals are routed, indicating the power rail is "sagging" under load.

• The "Dead" Unit: Total loss of power (no fans, no LEDs, no LCD) after a power spike or several years of 24/7 heat exposure.

• Failed Boot Sequence: The unit’s fans spin up briefly but it fails to initialize, often accompanied by a clicking sound from the module as it attempts to "cycle" on.

Technical Installation Note

Replacing a 150W power module is a high-level repair. Incorrect handling can be hazardous.

• Lethal Charge: The large capacitors in a 150W supply can store a lethal voltage for quite some time. Unplug the unit and wait at least 10 minutes before opening the chassis.

• Tight Connections: High-current 12V outputs often use screw terminals or spade connectors. Ensure these are tight. A loose connection at 12.5A generates extreme heat, which can melt internal wiring or cause a fire.

• Thermal Path: Ensure that the module is correctly seated on its standoffs and that no cables are obstructing the airflow paths. These modules rely on the unit's internal fans to stay within operating temperatures.

• Insulation: Ensure the plastic safety shield (Mylar sheet) is correctly positioned beneath the board to prevent any solder points from arcing against the metal chassis.

Are you replacing this in an ATEM switcher or a Videohub? Knowing the specific device helps determine if you need to check the cooling fans for simultaneous failure.