When I go to turn my console on after 2 seconds it shuts back off.

This can be several issues

1. Overheating: If the internal temperature of the console gets too high, it will shut down to prevent damage. Make sure that the vents on the console are clear of any obstruction, and try not to use the console in a hot or poorly ventilated area.
2. Power supply issues: If the power supply is not functioning properly, it can cause the console to turn off unexpectedly. Try unplugging the power cord from the back of the console, waiting a minute, and then plugging it back in to see if that fixes the issue.
3. Hardware failure: If the problem is not related to overheating or the power supply, it's possible that there is a hardware issue with the console itself. This could be caused by a variety of things, including a faulty motherboard or other component.

It sounds like yellow light of death. If you answer yes to these questions then thats what it is. I have a step-by-step instructions on how to fix it.

1. When you turn your console on, when it turns off does it beep 2 to 3 times before shutting down?

2. When it does shut down right before it does pay attention to the lights, do you see a yellow on blink once for a split second?

3. Afte the console shuts completely off does the red light just sit there and blink?

http://www.fixya.com/support/t8396931-ps3_turns_ok_but_turns_itself_off_after

your console has an overheating problem. send it in.

Hook up to tv like normal....Hold down power button for 10-15 seconds or until you hear 2 beeps. If it shuts off, just turn it back on and that will reset your audio and video out from ps3.

don't turn on it u fool

when that message appears press the PS button on your controller and your controller will turn on, follow the steps on the screen after shutting it down it should be back to normal, all you have to do is hold the O/I button for 2 seconds, it will turn off after that press the PS buton on your controller and it will turn back on

i was playing mw2 yesterday and bam (red light of death) ill prob have to send it to sony but i got the game out follow these steps. 1. turn off at the back. 2. hold your finger on the eject button. 3. turn on again at the back while holding the eject button for a few seconds 4.your playstation should start up and your game should be ejected

blinkin red light usually means hardware failer the only 2 easy tricks to try that wont void your warrenty is
#1 remove the hard drive and boot it up without it and see if it boots and says no hard drive then shut it down and plug the hard drive back in if it works now then was just a drive error if it goes back to blinkin you have a bad drive.

#2 the fan test that also seems to clear any over heating or other blinkin light problems --- turn the ps3 off for 40 seconds by the switch on the back then hold down the eject button and flip the power switch back on while still holding the eject button and see if that clears it.

is it doing this when the charger is plugged in too? it sounds like the battery isnt taking any charge so is constantly flat!

if its insured post it to nintendo otherwise buy a new one