ASUS confirms ‘reverse’ memory capacitor as the main cause of ROG Maximus Z690 HERO problems, will offer compensation to all affected users

ASUS has confirmed the root cause of their ROG Maximus Z690 HERO motherboard, which encountered several 53 code issues, some of which even ended up in flames. The Taiwanese manufacturer has announced that the problem occurred due to the incorrect placement of a memory capacitor and they will offer a free replacement to all users who have been affected.

ASUS ROG Maximus Z690 HERO Motherboard ‘Code 53’ & Burning Problems Caused by ‘Reverse’ Memory Capacitor, Board Maker to Offer Replacement to All Affected Users

According to our report, Bullzoid at Actually Hardcore Overclocking did its own research and found that one of the memory capacitors on the ROG Maximus Z690 HERO motherboard was upside down on all the models affected by the ‘Error 53’ problem. ASUS has now followed up with a statement confirming that this was true and they will offer a replacement to all users affected by this issue.

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It seems that the problem potentially affects all ASUS ROG Maximus Z690 HERO motherboards with the part number 90MB18E0-MVAAY0 and serial number starting with MA, MB or MC. All of these devices were manufactured in 2021 and the labels are on the box. So just in case you have one of the affected models, you can follow the following steps that ASUS has provided to get a replacement.

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 tentatively identified a potential problem with reverse memory capacitor in the production process from one of the production lines, which may cause troubleshooting error code 53, no entry or damage to motherboard components. The problem potentially affects devices manufactured in 2021 with the part number 90MB18E0-MVAAY0 and serial number starting with MA, MB or MC.

You can identify your item number by referring to the product packaging: Please see the attached image

As of December 28, 2021, there have been a few incidents reported in North America. Going forward, we will continue our thorough inspection with our suppliers and customers to identify all possible affected ROG Maximus Z690 Hero motherboards on the market and will work with relevant public authorities on a replacement program.

Thank you so much to everyone for your patience and support as we work through the replacement program.

If you have any questions or concerns, please feel free to contact ASUS Customer Service.

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Yours sincerely,
The ASUS team

While the burns are caused on the two MOSFETs, the main reason is the memory capacitor labeled ‘150’. You can see in the image above that the affected motherboards have the memory capacitor placed upside down and not the right one away. Well, it’s a good thing that ASUS was able to spot the issue on time, and kudos to Bullzoid for his quick investigation that helped more users get the Z690 HERO for the new setups.

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