After certain situations, such as power outages, moving or changing television sets, you may want to reset your Sony PlayStation 3 (PS3) from its high-definition multimedia interface (HDMI) to its standard-definition, or normal, setting. Despite how broken your PS3 appears, you do not need a new console. Resetting the device is actually quite simple.
Turn off your PS3. The PS3 cannot be reset, or reverted, from HDMI mode to standard-definition mode if its power is switched to the on position. Give your console about 30 seconds to cool down.
Hold down the power switch at the front of the PS3 for five to 10 seconds or until you hear the double beep -- whichever occurs first.
Plug the three-pronged red, white and yellow cord that was included in your PS3's original packaging into your PS3. Connect the other end of the cord to your television
Switch the input settings on your television from HDMI to AV1 or AV2. Afterward, your PS3 will display standard-definition images again.
To go back to HDMI, access the XrossMediaBar (XMB) menu, go to "Display Settings" and choose "HDMI." Swap the three-pronged cord for an HDMI cord, and then switch the input settings on your television from AV1 or AV2 to HDMI.