ASUS recalled Z690 Maximus Hero MBs due to assembly goof-up

While one may want to end 2021 with a bang, this is probably the last thing on their mind. Rightfully so, but measures have been taken to recall such motherboard. Such is the case with the ASUS ROG Maximus Z690 Hero motherboard.

The story is usually on social media and in the respective forums. Users pointed out their Z690 motherboard refused to POST, therefore creating a POST code 53. According to the code, this indicates RAM issues. However, upon closer inspection, burnt components were identified specifically the one located next to the RAM slots. While some of these malfunctions were quiet, some reported audible pops, a pungent smell of a burnt component in the memory subsystem.

It was identified by resident overclocking and PC hardware expert Buildzoid that two MOSFETs on the ASUS ROG Z690 HERO were installed backwards. One of the main functions of this MOSFET was to deliver 5V, including DDR5 memory modules. Therefore it’s extremely important that respective owners check their motherboards by not using them.

Asus responded after gathering enough information and said the following:

“To our valued ASUS Customers, ASUS is committed to producing the highest quality products and we take every incident report from our valued customers very seriously. We have recently received incident reports regarding the ROG Maximus Z690 Hero motherboard. In our ongoing investigation, we have preliminarily identified a potential reversed memory capacitor issue in the production process from one of the production lines that may cause debug error code 53, no post, or motherboard components damage. The issue potentially affects units manufactured in 2021 with the part number 90MB18E0-MVAAY0 and serial number starting with MA, MB, or MC.

You can identify your part number by referring to the product packaging:


As of December 28, 2021, there have been a few incidents reported in North America. Going forward, we are continuing our thorough inspection with our suppliers and customers to identify all possible affected ROG Maximus Z690 Hero motherboards in the market and will be working with relevant government agencies on a replacement program. Thank you so much to everyone for your patience and support while we are working through the replacement program.

If you have any questions or concerns please feel free to contact ASUS customer service. Best regards, The ASUS Team.”

ASUS also opened up a webpage so that you can identify affected motherboards via serial number and proceed with the recommended steps.

While it is extremely rare to see this happen at an assembly, what’s important is the solution for a replacement. What’s also appreciated is that this recall will also be made via the U.S. Consumer Product Safety Commission. This is very appreciated when we think about recall announcements by other manufacturers not too long ago.

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