Power won't stay on

tried to check first the power supply if no any sign of bulging electrolytic capacitor this was a common that we encountered trouble.

I'm afraid you have gotten the Yellow Light of Death ( YLOD ) you will need to have your PS3 repaired by a technician or you can Google YLOD and you will find a repair guide.

try another outlet if the light still will not turn green you will need to contact sony,
if the light does turn green let me know and we will get this fixed

try checking the system for timer or sleep mode operation try to setting it off

The flashing light red power light should only stay while the fan cool down for about 1 minute after a power off (remember to always wait before unplugging the TV so the lamp can cool down with the fan). Does that flashing start right away after plugging back the TV after an hour of letting it without AC power.

The red light should flash no longer than 10 sec. This prepare the light to be turned on. If all is OK the green should stay (no longer flashing) and the sound and picture come on.

As for the lamp flashing, i bet it's only 1 time each 5 sec? Or do it group many rapid flash each 5 sec?

Things that can be wrong:
-the fan lamp

-the lamp is not proprely inserted (wait an hour before manipulating it to be sure it cooled down, and use glove to not put body oil on it).

-Lamps is defective and is not operating properly so you can't get to the usual on screen message that recommend to change the lamp.

One of two things can be the problem...one the bulb is bad...two the ballast is bad. If the bulb is not bad then the ballast is...it can usually be fixed by replacing a resistor on the board itself...it is labeled R3 and is a 1000 ohm resistor

Do you see a yellow light for a sec b4 it flash green?

If so its called the yellow light of death[ylod]

Sorry to be a bad new braker but this is varry bad for you,,

look for info on ylod..

With your PS3 turned off, press and hold the Power button on the front of the PS3 for about 10 seconds (the system will beep as normal as it starts up but after 7-10 seconds it will beep again). The video settings should now be reverted. Doing this will also reset any theme settings. try this? seems to fix alot of issues.

check capacitor on outside unit,or gas is leaking.
try to reset(small black button in inside unit under the cover)

It is possible one of the internal fuses blew out.
It could be a bad horizontal outut transistor.
It could be a bad secondary of the power supply went bad
And many other things.
If it's just a fuse, it won't cost much, but a lot of them do not look like you would expect a fuse to look like.It might be a little yellow, green, or gray rectangualar box shaped part. :D