ASUS’ blunder can instantly “turn gold” a user’s brand new $600 Z690 motherboard


Updated on 12/30: ASUS admits Z690 Maximus Hero board has faulty capacitor, starts product recall

ASUS made an extremely silly manufacturing mistake with its high-end ROG Maximus Z690 Hero DDR5 motherboard line, which can turn a user’s $599.99 “toy” into trash. “in just one note”.

Specifically, recently, there have been many cases where ASUS ROG Maximus Z690 Hero DDR5 owners reported that this motherboard gave off a safe smell or worse, caught fire. The root cause of the problem seems to be an incorrectly installed on-board capacitor, and this is of course the responsibility of the manufacturer.

After nearly 2 days of the problem being posted simultaneously by forums and major technology news sites, ASUS has finally admitted that this may be the root cause of the problems reported recently. It also announced it would work with relevant government agencies to recall and replace defective motherboards in their respective markets.

Speaking on the matter, Juan Jose Guerrero, ASUS Technical Marketing Manager, said:

ASUS notice about the Maximus Z690 Hero problem

To our loyal customers,

ASUS is always committed to providing our customers with products of the highest quality, and we also value any comments and problem reports related to our products. We have recently received information regarding the ROG Maximus Z690 Hero motherboard. While this investigation is still being rigorously conducted, we have preliminary identified a potential reversible memory capacitor problem during manufacturing, presumably originating in one of the wires. existing chain. This is a serious problem that can cause memory error code 53, no post, or damage to motherboard components. The issue may affect devices manufactured in 2021 with part number 90MB18E0-MVAAY0 and serial numbers starting with MA, MB or MC.

As of December 28, 2021, there have been a few crashes reported in North America. Going forward, we will continue to conduct thorough physical testing with our suppliers and customers, to identify all currently affected models of ROG Maximus Z690 Hero motherboards. circulating on the market, and will work with the authorities to come up with appropriate recall and replacement measures.

In case you find yourself in possession of one of the faulty ROG Maximus Z690 Hero motherboards, please proactively contact one of the following addresses:

ASUS Support Site

ASUS Live Chat Site

ASUS MyASUS App (on Windows, Android or iOS)


According to analysis by tech blogger Buildzoid, who owns the YouTube channel “Actually Hardcore Overclocking”, the burnt-out MOSFET transistors in the reported boards all have one thing in common. That is, the capacitor is misplaced, causing polarity reversal and failure during basic use is an inevitable consequence.

The burnt out boards appear to have the capacitors set backwards, as can be seen in some of the actual images below:

Damage due to short, fire is shown in the area between the RAM pin lock and the LED screen. This is also consistent with user reports that their system cannot be started due to an error related to working memory (code Q53).

It can be seen that there have been a few burnt chips, and they are all MOSFETs that are directly responsible for supplying power to the memory modules. Based on the analysis results and actual photos, the Buildzoid team concluded that the burnt MOSFETs are responsible for distributing 5V of voltage going to the memory’s voltage regulation module (VRM), causing it to completely shut down. .

In short, if you compare the boards that are working properly with the ones that have problems, it is not difficult to see that the faulty capacitor is reversed, in the wrong place.

Of course, not every product has errors. But if you own ROG Maximus Z690 Hero, you should probably check the capacitor to see if it’s in place, and if not, contact ASUS support for guidance on the issue. this.

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