SKU: 95629484595

Blackmagic Design Spares - ATEM 4M/E BCast Studio 4K - PCB Mezz

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Description

Blackmagic Design Spares - ATEM 4M/E BCast Studio 4K - PCB MezzThe Blackmagic Design Spares ATEM 4 M E Broadcast Studio 4K Mezzanine PCB is a specialized high density interface board for the "top of the line" 2RU rack mount switcher. Because this switcher handles 20 inputs of 12G SDI and supports frame rates up to 2160p60, the data throughput is too massive for a single circuit board. The Mezzanine board acts as the "Input Output Engine," sitting directly atop the Main PCB to handle the physical physical signal

The Blackmagic Design Spares - ATEM 4 M/E Broadcast Studio 4K - Mezzanine PCB is a specialized high-density interface board for the "top-of-the-line" 2RU rack-mount switcher.

Because this switcher handles 20 inputs of 12G-SDI and supports frame rates up to 2160p60, the data throughput is too massive for a single circuit board. The Mezzanine board acts as the "Input/Output Engine," sitting directly atop the Main PCB to handle the physical physical signal conditioning for the massive array of BNC ports.


Core Responsibilities

  • 12G-SDI Bank Management: Specifically handles the 20 inputs and the multiple Program/Aux outputs. Each port has dedicated 12G-SDI re-clocking to ensure signal integrity over long cable runs.

  • Standards Conversion: In the Broadcast Studio 4K model, the Mezzanine board contains the hardware that allows every single input to have its own standards converter. This allows you to plug in a mix of HD, Ultra HD, and different frame rates simultaneously.

  • Signal "Sandwich" Interconnect: It passes processed video data down to the Main PCB (where the 4 M/E rows and 16 Keyers are calculated) via high-speed, multi-pin board-to-board connectors.


When to Replace the Mezzanine PCB

On this professional-grade unit, the Mezzanine board is often the part that "takes the bullet" for the rest of the system during electrical mishaps.

  • Bank Failure: If a group of inputs (e.g., Inputs 1–10) suddenly goes black while the rest of the switcher functions, a localized power regulator or controller chip on the Mezzanine board has likely failed.

  • Sync/Conversion Errors: The switcher connects to the computer and shows the Multiview, but the inputs show "Unsupported Format" or glitchy video despite the "Standards Conversion" being turned on.

  • BNC Physical Damage: With 20 inputs and over 10 outputs, the BNC connectors are under immense stress in mobile fly-packs. If a connector is sheared off or the internal pin is pushed in, the Mezzanine board is the part that must be replaced.

  • Heat-Related Artifacts: If the video shows "sparkles" or digital noise that only appears after the unit has been on for 30 minutes, the 12G-SDI processing chips on this board are likely overheating or failing.


Technical Installation Note

Repair Level: 5 (Expert). This is a high-risk repair due to the density of the components.

  1. Massive Port Disassembly: You must remove the hex nuts and washers from all 30+ BNC connectors on the rear of the unit. Using a power driver is discouraged as it is very easy to strip the threads or slip and gouge the PCB.

  2. The "Lifting" Danger: The board is connected to the Main PCB by several high-density "mating" connectors. You must lift the board perfectly level. If you tilt the board while lifting, you will bend the pins on the Main PCB, which usually results in needing to replace both boards.

  3. Thermal Pad Criticality: This board generates an immense amount of heat. You must replace all thermal pads (often 10 or more) that sit between the Mezzanine chips and the internal heatsinks. Reusing old, compressed pads will lead to a "thermal runaway" failure of the new board.

  4. Weight & Alignment: The board is heavy and large. When reinstalling, ensure all 30+ BNC ports align with the chassis holes before pressing down on the interconnect pins.


Diagnostic: Mezzanine vs. Main

  • It is the Mezzanine Board if: The ATEM Software Control works, the Multiview UI is visible, but all or most of the SDI Inputs are dead.

  • It is the Main Board if: The unit won't boot, won't connect via Ethernet, or the 4 M/E effects (like the DVEs) are crashing the system.

Expert Advice: Because the ATEM 4 M/E Broadcast Studio 4K is a flagship unit, it is highly sensitive to static. If you are replacing the Mezzanine board, ensure you are working in a climate-controlled, ESD-safe environment. A single static pop to one of the 12G-SDI pins during installation can permanently damage the new board.

Are you losing a specific group of inputs, or is the entire SDI I/O bank unresponsive?

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 95629484595

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Douglas J
Louisville, US
★★★★★ 5
How many dog toys have you bought that just laid on the floor unused?
Color: Orange
New husky has more energy than an entire pre-school - even being walked more than three miles a day wasn’t sufficient to drain her excess energy. I threw the dice on this - and it’s AWESOME. Comes with an extra rope and an extra side piece. Rechargeable with a USB-C cable. When you turn it on, the blue LEDs flash, the entire device buzzes, bounces, and races back and forth across the floor. After a couple of days of uncertainty, my new husky LOVES this. She chases it around, grabs it by the attached rope and carries it from room to room. After a short bit of activity, the toy goes into ‘sleep’ mode, until either the dog touches it again or a timer has elapsed, and then it fires up and starts buzzing and racing around the floor again. From a full charge, the toy will keep your dog entertained all day. Bright orange color makes it much easier to find when it’s rolled behind the toilet (as it did this afternoon). Sturdy. Highly resistant to chew damage. If this one wears out or breaks, I’ll absolutely get another one.
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Reviewed in the United States on April 20, 2026
G
Verified Purchase
Grant
Whiting, US
★★★★★ 4
Puppy interactive toy
Color: Orange, Color: Orange
It’s a great toy as it keeps my 5 month old puppy very entertained! It is pretty hardy and made of good material as she tries to throw it around and chew it. She does swing it around and the hard part will hit her. She doesn’t seem bothered by it tho lol good size and minimum noise When I first introduced her to it she was a little scared but now she gets excited to play with it once it finishes charging.
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Reviewed in the United States on May 2, 2026
L
Verified Purchase
LEE SANG
Whiting, US
★★★★★ 5
My Dog Is Obsessed With This Toy!
Color: Orange, Color: Orange
My dog absolutely loves this toy and plays with it every day. The moving and rolling action keeps him entertained much longer than regular toys. He loves chasing it around the house and tugging on the rope. It’s also nice because it helps burn off some of his energy indoors. The material feels pretty sturdy, and charging was easy. Definitely one of the best interactive toys I’ve bought for my dog!
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Reviewed in the United States on May 19, 2026
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rebe99
Battle Creek, US
★★★★★ 3
Waste of Money
Color: Orange
Cool toy but my dog ate through it the second day he played with it. It is not for strong dogs. No durability. I had to throw away the orange covers and now he just throws it around.
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Reviewed in the United States on May 18, 2026
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Verified Purchase
Joseph Onkst
Alexandria, US
★★★★★ 5
Cool toy. Fun for all
Color: Blue
A cool toy. entertainment for the dogs but more so for the dog parents to watch the dogs reaction. Comes with an additional rope just in case, which I loved. Only side note I would say is that the fast mood could be a little faster. My Golden retriever figured out the speed in less than 24 hours and now picks up the toy to try to chew it up, instead of chasing. With him attempting to chew on the toy in the small time I give him, there are no teeth marks yet…this toy appears to be durable. We play in short increments but enjoy the toy.
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Reviewed in the United States on May 29, 2026

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