The first issue was reported by Kotaku editor Stephen Totilo, who claims: "The first retail PS4 we got from Sony didn't work".

"In the past week, my Kotaku colleagues and I have used one pre-release PS4 and three retail PS4s with no problems. I've also heard from fellow gaming reporters who've used their PS4s with no problems.

"But the first retail unit that Sony provided me failed to work when I plugged it into a TV in Kotaku's office. A colleague and I were able to compare it to a second PS4 that did work and we found that the issue was rather simple: the bad unit had a faulty HDMI jack that we couldn't fully plug an HDMI cable into.

"It couldn't make a solid connection and therefore, apparently, couldn't transmit a stable signal to our TV. We tried different cables and monitors. The issue was with the console. Again, to be clear, the other four units we've tested first-hand have worked fine."

The second claim came from Reddit user Arogon, who was the winner of an early PS4 through a competition run by Sony and Taco Bell. "When I turn on my console it just sits there pulsing blue," Arogon explained.

"As far as I can tell it is supposed to turn white but it isn't doing that. There is no signal on my TV either."

Games site IGN later reported that it had suffered a similar issue with one of its retail PS4 consoles.