Manufacturing fault with some ROG Maximus Z690 Hero motherboards prompts a recall from Asus

guest · Dec 30, 2021

Reverse installation of a capacitor is to blame
December 30, 2021

A hot potato: Following an increasing number of user reports complaining of melting MOSFETs, error codes and smoke erupting from Z690 Hero motherboards, Asus launched an investigation and has identified a backward installed capacitor to be the culprit. The hardware maker is now working towards a replacement program for affected customers.

If you’ve recently spent some sweet dough on Asus’ premium ROG Maximus Z690 Hero motherboard, it’s highly recommended that you check it for a faulty capacitor before deciding to post or boot up. Multiple owners began reporting issues with their hardware last week, ranging from a burned-up section on the motherboard, to smoke and post error codes indicating memory problems.
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A Reddit user said they went through two Z690 Hero mobos in just three days, one of which caught fire, while others reported similar incidents on platforms like YouTube and Asus’ forums.

Asus revealed that motherboards with part no. 90MB18E0-MVAAY0 and serial number starting with MA, MB, or MC were potentially affected units and is asking owners to identify theirs by referring to the product packaging.
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ASUS Announcement Regarding Maximus Z690 Hero Issue

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.

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.
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guest · Aug 20, 2022

ICYMI: 10,000 Asus ROG Z690 boards recalled due to danger of burn and fire
August 20, 2022

Back in December 2021, Asus was found to have messed up big time as it had installed capacitors the wrong way in one of the most expensive motherboards out there, the ROG Maximus Z690 Hero. The polarity reversal, among other issues due to this was potential fire and burn hazard, and Asus began the recall process for the affected units.

Yesterday, the United States' Consumer Protection Safety Commission (CPSC) formally announced the recall. The announcement reveals the scale of the recall which stands at 10,000 units. It reads:

This recall involves ASUS ROG Maximus Z690 Hero computer motherboards sold separately for computers. The recalled motherboards have part number 90MB18E0-MVAAY0. Affected units have a serial number that starts with MA, MB, and MC, which indicates the manufacture year in 2021.
Asus has re-assured that this is not a new issue and it is only a formal announcement by the CPSC: [...]
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Still in case you missed the earlier announcement and happen to own one of the affected boards that hasn't burned up, now is the time to act.

Source: Asus via Guru3D
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Manufacturing fault with some ROG Maximus Z690 Hero motherboards prompts a recall from Asus

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