The information had been the subject of a micro buzz during the holiday season. A design problem on some ROG Maximus Z690 Hero cards could, in the “best” case, generate an error code “53” on the card’s debug indicator. But in other cases, we had feedback of burning smells and visually, some components seemed completely charred. Obviously in the latter cases, the motherboard was completely unusable. All this misery seems to be caused by a simple capacitor mounted upside down.
Z690 Hero: no problem in Europe
However, this problem seems to be limited to certain Z690 Hero series. Officially, we are talking about only a few units manufactured in 2021 with the part number 90MB18E0-MVAAY0 and the serial number starting with MA, MB or MC. If some incidents had been reported in North America, no feedback has been made in Europe where the card is distributed since the end of the year.
The official communication of the brand is rather reassuring on the subject:
“Since December 28, a series of failures and incidents on ROG Maximus Z690 Hero boards have begun to be reported. Asus launched an immediate investigation that has preliminarily identified a possible inverted memory capacitor issue in the production process on one of the assembly lines that can cause debug error code 53 or damage motherboard components
The issue potentially affects parts manufactured in 2021 with part number 90MB18E0-MVAAY0 and serial number starting with MA, MB or MC. […] their destination was North America…”
To avoid unnecessary stress, Asus has also set up a tool to check if your card potentially has a problem https://www.asus.com/support/rog-maximus-z690-hero-checking