I just turned on my PS3, and had some troubles with my controller. It simply blinked a few times, and then nothing. If I try to turn it on again, it simply blinks a few times - And then nothing. I tried my other controller aswell, and it does the same thing. They both worked fine yesterday - And i'm a little afraid this is a problem on the consoles front, not the controllers.
 
I can still assign and use them both, if I leave the charging cable in, but that is kind of a hassle. 
 
Anyone have any idea what to do? Or has anyone experienced this before? It's pretty friggin' annoying.

Probably the battery has run out, maybe you can try checking out a guide on opening one and replacing it.

Hitting the hard reset on the controllers seems to have worked, at least for now.

 
Thanks for the tip though :)

1. The battery on the controller is dying due to age or being faulty which in this case you can either buy one and replace it yourself (a fairly cheap and easy procedure), or send it to Sony for a replacement. Second option might be not be available anymore though. 
2. Your Bluetooth antennae in your PS3 controller might be faulty and if this is the case then it's easier, and cheaper, to just buy a new one.