MSI admits faulty heatsink design for cracked Z790 chipsets, begins replacing faulty units

[Pelican Press 0]

MSI admits faulty heatsink design for cracked Z790 chipsets, begins replacing faulty units

We reported yesterday that users have been complaining for months about MSI Z790 motherboard issues that resulted in systems not powering on at all or failing repeatedly during POST (Power On Self-Test). Today, MSI

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confirming the findings of YouTuber Joshi Repair, who suggested that cracks found on the PCH (Platform Controller Hub) of an MSI Z790 Tomahawk WiFi motherboard resulted from a factory fault.

“We have discovered a ********* of units might encounter non-functional PCH potentially resulting in ***** on Arrival (DOA) of the motherboard products. We have isolated the cause to a previous used chipset heatsink ****** design and have taken proactive measures to address this issue,” MSI explained in a statement. “A revised chipset heatsink ****** design has been implemented into our production, and the known cases have been resolved.” 

MSI continued, “We uphold high standards of responsibility and accountability, and want to assure affected customers can promptly receive product replacements.” Customers are urged to contact the closest regional MSI service center to initiate an RMA replacement for a Z790 motherboard afflicted with a defective PCH.

While it’s commendable that MSI is replacing the boards after the failures received wider coverage by the media, there are reports of cracked PCHs with the Z790 Tomahawk WiFi via

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that go back at least nine months. In one case,

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received a brand new Z790 Tomahawk WiFi motherboard from Newegg that ******* to power on. The user found a ****** after removing the PCH heatsink and decided to RMA the motherboard to Newegg. To add insult to injury, encephalophiliac received an RMA replacement from Newegg, which was also DOA.

MSI did not confirm how many of its Z790 motherboards shipped with the faulty heatsink ******. In addition, the company only confirmed issues with the Z790 Tomahawk WiFi and did not mention other Z790 SKUs that could be affected. However, it’s alleged that the number of affected motherboards could be in the hundreds.

The good news here is that the root cause of the DOA motherboards has been identified, and a fix is currently being implemented on MSI’s production lines. For customers in the ******* States, you can start the RMA process for a defective motherboard via the

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