If it is not displaying a signal on ANY of the HDMI inputs, double check that the output on the PS3 is set to HDMI. And if it is, try another cable. Start off simple and work up.
If it is not displaying a signal on ANY of the HDMI inputs, double check that the output on the PS3 is set to HDMI. And if it is, try another cable. Start off simple and work up.