Aording to a snapshot of a deleted forum post, the interns at a Foxconn manufacturing plant in Yantai, China have sabotaged the PS4. This was first reported on the IGN forums here. Unfortunately, the forum was locked. The IGN forum author tried to elaborate more here. Here is a snapshot of the actual post:
On Aug. 28th, one of the student started a thread stating that "Since foxconn are not treating us well, we will not treat ps4 console well. The ps4 console we assemble can be turned on at best". This thread has been deleted but got snapshot.
If your ps4 console was manufactured in Yantai China, then I wish you good luck.