SKU: 68845185646

Blackmagic Design Spares - ATEM Constellation 8K - PSU 400W

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Description

Blackmagic Design Spares - ATEM Constellation 8K - PSU 400WThe Blackmagic Design Spares ATEM Constellation 8K PSU 400W is the internal high capacity power supply module for Blackmagic's flagship 8K switcher. Because the Constellation 8K handles a massive amount of data processing (40 inputs, 24 outputs, and 4 M Es in 8K), it has significant power requirements and generates considerable heat. To ensure professional grade reliability, the Constellation 8K actually houses two of these 400W modules for

The Blackmagic Design Spares - ATEM Constellation 8K - PSU 400W is the internal high-capacity power supply module for Blackmagic's flagship 8K switcher. Because the Constellation 8K handles a massive amount of data processing (40 inputs, 24 outputs, and 4 M/Es in 8K), it has significant power requirements and generates considerable heat.

To ensure professional-grade reliability, the Constellation 8K actually houses two of these 400W modules for redundancy.


Core Responsibilities

  • Load Balancing: When both PSUs are healthy, they share the power load, which reduces heat stress and extends the lifespan of the individual components.

  • Redundancy (Fail-Safe): If one PSU fails, the second 400W module is capable of powering the entire 2RU chassis alone, allowing the broadcast to continue without interruption.

  • Multi-Rail Output: Converts AC mains power into the specific DC voltages required for the high-performance FPGAs, the 40 BNC input engines, and the internal cooling fans.

  • Protection Circuitry: Includes built-in fuses and thermal shut-off to protect the expensive Main PCB from power surges or over-voltage events.


When to Replace the 400W PSU

  • "PSU Failed" Alert: The ATEM Software Control or the front panel LCD displays a "Power Supply Failed" warning.

  • Loud Fan Noise / Clicking: If a PSU is failing, its internal cooling fan may struggle, or you may hear electrical "clicking" (relays firing) as it attempts to stabilize voltage.

  • Intermittent Power-Offs: The unit randomly shuts down or reboots, especially when under heavy processing loads (e.g., using all 4 M/Es or complex DVEs).

  • Input/Output "Glitching": While usually a logic issue, a "sagging" power supply can cause digital noise on the SDI outputs before the board completely fails.


Technical Installation Note

Repair Level: 2 (Moderate).

  1. Dual AC Inputs: Remember that the Constellation 8K has two separate AC power inlets. Unplug both before opening the unit.

  2. Modular Swap: These PSUs are typically modular. They are secured to the floor of the chassis with screws and connected to the main distribution board via a heavy-duty wiring harness.

  3. Thermal Clearance: Ensure the replacement PSU is seated correctly. Any obstruction of the PSU's dedicated air path will cause the new unit to overheat quickly in a 2RU rack.

  4. Harness Verification: Ensure the multi-pin connector is pushed in until it clicks. A loose high-amperage connection can cause arcing, which will melt the plastic connector over time.


Diagnostic: PSU 1 vs. PSU 2

The Constellation 8K identifies which power supply is failing in the menu. You can verify this by:

  1. Unplugging AC Cord 1. If the unit stays on, PSU 2 is healthy.

  2. Unplugging AC Cord 2 and plugging back in Cord 1. If the unit stays on, PSU 1 is healthy.

  3. If the unit dies during either test, you have identified the dead module.

Expert Advice: If one PSU has failed after years of service, it is often best practice to replace both. Since they have likely been running for the same number of hours, the second PSU is often nearing its end of life as well.

Has one of your redundant power indicators turned red on the front panel, or is the entire unit failing to power up?

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 68845185646

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Elizabeth Cook
Grantham, US
★★★★★ 2
Check your milk preference when buying this unit. Product Does not last
Color: White
I purchased this frother in mid Oct and less than 90 days later, it's no longer working. The wisk does not spin, and the element does not heat the milk. I am currently working with customer support on a refund / replacement, but so far not happy. I've been told it does not work with 2% organic milk and that I need to switch to whole milk, which will solve my issues. Not sure how whole milk will help with the heating element? This was not disclosed when I purchased the unit. If I had known my milk choice would impact the frother, I would have chosen another brand or product. I like the unit, it's compact, easy to clean, but it did not last.
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Reviewed in the United States on January 12, 2026
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Daniel P
Alexandria, US
★★★★★ 5
Works great and easy to use
Color: Black
I feel like I’ve finally found a decent milk frother! I’ve gone through (or returned) several models over the last few years, but this one has a different design and hasn’t frustrated me like the others. It has plenty of power to froth milk, foam quality is good, heating is good. I checked the temperature a few times, since a few reviews were critical of that, and it was within a degree or two of what I’d set, so I’d say it’s good! I appreciate that it remembers the last settings so most days are a 1-click operation. But even changing the settings is easy - easier than others I’ve used while having more options.
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Reviewed in the United States on April 26, 2026
P
Verified Purchase
Payton
West Palm Beach, US
★★★★★ 5
Best addition to our coffee bar
Color: Black
BEST milk frother we've owned. It is on the larger size but worth it. I love that there are multiple temperature settings. It is easy to use and figure out. The frother spins inside of the stainless steel cup and is magnetically attached inside so it does not come off easily. We use agave for sweetener and being able to throw the cup into the dishwasher to clean off residue has been the biggest plus of this frother. Highly recommend. Worth the cost.
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Reviewed in the United States on June 4, 2026
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Trekkintheplains
Bozeman, US
★★★★★ 5
Cute, functional, works great!
I LOVE this thing!! It froths the half and half for my coffee and cream for my tea so beautifully. It's fast, and easy to use and clean. Really adds to my morning routine to be able to choose a temperature and froth level to my coffee creamer. The color is so pretty and both it and the style fit right in with my kitchen decor. I've been using it for several months and haven't had any issues to far. Great item! I was afraid it would just be more clutter and gadgets I didn't need taking up counter space, but it fits right in next to my coffee maker, and I truly do use it every morning. It makes my coffee even more enjoyable, believe it or not. Love it!!
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Reviewed in the United States on April 10, 2026
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Melissa Tucker
Boise, US
★★★★★ 4
Solid purchase
Color: White, Color: White
I have used it often, basically daily. I love how it has a magnet stirrer and therefore is quiet. I like the stainless steel aspect. It does heat up well. It can store two regular mugs of beverage or maybe 3-4 mugs of froth. It is lightweight but doesn’t feel cheaply made- good enough quality. The froth is great- I have no complaints. I had to learn the hard way that non-homogenized milk gets grainy- weird and icky. I wish it was a little more frothy on the matcha side of things but I still use it. Also, I wish for things like hot chocolate that it got hotter. It goes to 160 on the machine but it doesn’t feel that hot when you drink it. I haven’t measured the temperature of the drink yet but it isn’t hot hot.
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Reviewed in the United States on January 2, 2026

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