Declaratie oficiala de la Sony :

There have been several issues reported, which leads us to believe there isn't a singular problem that could impact a broader percentage of PS4 units. We also understand that some units were reportedly damaged during shipping. The number of affected PS4 systems is less than 1%, which represents a very small percentage of total units shipped to date and is within the expected range for a new product introduction. We understand the frustration of consumers that have had a problem and are working with them and our retail partners to help troubleshoot issues and ensure affected units are exchanged.
Sursa : Sony says PS4 failures have varying causes, affect less than 1 percent of units