Instructions
Connect the PS3 composite AV cable to the port on the back of the PS3. Note that the PS3 end of the composite AV cable is a single black plug.
Connect the red, yellow and white end of the composite AV cable to the corresponding input ports on the back of your TV.
Turn on your TV.
Use your remote control to change the "Source" or "Input" to the channel to which you just connected the composite AV cable.
Press the "Power" button on your PS3, and hold the button down until you hear a series of beeps. This resets the PS3 to its default video settings, allowing you to view the PS3 display on your standard-definition TV.