Recently, many players have said online that cracks have appeared in the shell of their Nintendo Switch, including the power button and near the heat sink, according to these players, this is the machine's own design problem, not caused by external forces.

In order to find out how widespread the problem of switch really is, foreign media conducted a poll. In a section called "Does Your Switch Have Any Cracks on Its Casing That Aren't Caused by Accidental Damage?" In total, 1189 votes were received in the survey, of which up to 20% of respondents said they had seen these cracks on their switch.
According to the summary, the most common cracks form near the power button, and the right corner is by screws and heat dissipation. Some have speculated that these cracks were caused by the expansion and contraction caused by uneven heat dissipation in the switch, which may explain why many people have found debris falling near this area. Some have also suggested that Nintendo may have changed the design of the Switch due to the apparent nature of the problem and will address it in the new generation of Switches.
Meanwhile, Nintendo UK offers as high as £130 to £175 for repairs to the issue, while players do it themselves for only about $10.