I get this problem quite often, but it's typically not a problem at all. Usually it's that the console is set to the wrong video settings. In other words it's still trying to output to A/V or Component cables.
It's a simple fix; turn the console off, then hold down the power button until it beeps twice. That second beep means the video settings will reset, and hopefully you'll see it show up on the television screen.
If that doesn't work, it's possible the HDMI cable is faulty, so I would either test the cable or borrow one from a friend that you know actually works. If it is the cable you can get them pretty cheap online (on Amazon
, for example).
Unfortunately if you're still not getting anything you may be in for a more expensive fix. Test the HDMI ports on both the PS3 and TV (use some HDMI product on the tv, and connect the PS3 using HDMI to some other working television). If it's the PS3, Sony offers some pretty thorough support on their website (here
). If it's the television either go with the included component or composite cables or find yourself a new TV (sucky, I know, but they're a lot cheaper these days for a decent sized one).
If you've confirmed it's the PS3 console that's the issue (the HDMI port is faulty or something like that), again switch to component/composite cables. If you must have HDMI you could always send it in for repair (linkage here
). If you're still under warranty I believe they'll repair it for free. Otherwise you're looking at some fees ($100-ish I think). Either way it's one hell of a wait time; 3 weeks minimum.
I sincerely hope it's simply a matter of resetting the video settings though.
Best of luck!