[Tech Dog] In just one week, the number of cases of RTX 4090 "spontaneous combustion" burning increased to the fifth. This time the user is from South Korea. Judging from the on-site photos he posted, the problem is exactly the same. The 16Pin power supply socket terminal is stil

[Tech Dog]

In just one week, the number of cases of "spontaneous combustion" burning of RTX 4090 has increased to the fifth.

This time the user is from South Korea. Judging from the on-site photos he posted, the problem is exactly the same, and the 16Pin power supply socket terminal is still burned, and some plastic parts are melted and deformed by heat.

Review of the five spontaneous combustion incidents that have been exposed covers non-public cards of three brands, so it is highly likely that it is not a workmanship issue, but a mistake in the original design.

Previously, NVIDIA said it was investigating the first two accidents. The latest news is that the official has recalled a small scale for analysis and positioning.

In addition, NVIDIA is also collaborating with many AIC manufacturers, hoping to give a satisfactory reply from the outside world as soon as possible.

It is reported that there are not many first batches of RTX 4090, so the 5 cases that have occurred are enough to attract the attention of the official. Frankly speaking, these generations of NVIDIA graphics cards will always have controversial issues after the first launch, including video memory doors, tantalum capacitor incidents, etc.

It is also worth mentioning that power supply manufacturers, including Haiyun, plan to start pushing the new right-angle curved adapter plug for the RTX 4090 to reduce excessive bending and poor plug contact during cable chassis wiring.

Recently, General Motors (GMC) stated that due to sealing problems, the battery pack of HUMMER EV may get water in when wading, causing the vehicle to be unable to start or suddenly power outage during operation, causing safety hazards, so it will recall 735 GMC HUMMER EV models overseas.

GMC official said that there are many factors that cause this defect at present, but the most fundamental reason is that the entire battery pack is not properly sprayed with primer and the "inhibiting polyurethane sealant not filled properly" inside the battery pack. If water enters the battery pack and causes a malfunction, the vehicle will display a warning light and display information on its main display to remind the driver.

At present, there are no cases of battery pack fire due to this defect, nor are there any reports of injury to people. However, considering that it may suddenly lose power while moving, there must be safety hazards, so a recall is needed.

The affected models are 735 GMC HUMMER EV models produced between November 9, 2021 and September 28, 2022.

and 89 BrightDrop EV600 electric trucks produced from March 3 to June 24, 2022 were affected. This model is manufactured based on the GM Ultium platform, just like the HUMMER EV, and uses the same battery pack.

This is not the first time GMC recalled HUMMER EV. In August this year, some vehicles were recalled because of the design problems of the high-voltage connector, which may cause water to enter the battery pack.

This recall also caused netizens to worry about the safety of pure electric off-road vehicles. After all, unlike ordinary passenger cars, if you take such a large battery to go up and down the river, once there is a bump or water inlet, it is likely to be a catastrophic event.

Note: The above comprehensive information source Kuai Technology