Three days after the release of steam Deck, some users claimed that their new console had a stick drift issue. There are two different users on Reddit showing problem videos of right stick drift. As you can see from one of the videos, the value doesn't quickly return to zero after the finger leaves the right stick.
In the comments on the post, several Reddit users were trying to come up with some solutions. For example, directly replace the joystick. Because the Steam Deck is a modular handheld that is much simpler to repair than the handles of other handhelds or consoles, repairers can get replacement parts directly from valve.
On the other hand, stick drift could also be attributed to software issues, but steam Deck's system doesn't seem to offer the ability to recalibrate the stick.
It was pointed out that the drift problem in these individual cases may have come from a production line problem with the first shipment at the time of sale, as the media reviews did not mention the drift.
Also, while steam Deck is designed to allow internal parts to be taken apart and replaced. But Valve explicitly warned owners not to do so. Officials mentioned that unauthorized dismantling of the machine may "make a mess of things" and users will have to take considerable risks. Because some small screws are used inside the machine, damage to the battery can cause a fire.
Both users said they had contacted Valve for help, but neither said the issue had been resolved.