Okay, so here's the story.
I was playing muh gaem and switched from HDMI to cable on my TV.
I quickly switched back to HDMI and found that I have no picture or sound.
I've tried to reset the PS3 by turning it to standby, then turning it on and holding the power button, but to no avail.
I tried power-cycling the PS3 and the TV, tried unplugging and plugging my HDMI cable back in, tried changing HDMI ports, and have nothing.
I don't have a component cable so I haven't been able to check if I have picture with that.
What do?