Why does it turn itself off erratically?

Hi, I have nearly the same issue. Turns off after hours or them mins, but never reason for time. No lights show, remove lead from back and push it back in and it turns on again. Had the PSU replaced, and formatted harddrive but still the same. So you think it could be a faulty HD, and replacing this will finally sort it?

I once tried this and worked, but only once. So what you do is tap the power button until you see the red, then you tap the Ps3 top sort-of hard then press the power button again the second you tap the Ps3 it should turn on for an hour or so.Good luck with this, hope it works with you

Another one is trying to shake the Ps3 for 15 seconds or so, but I strongly recommend the other one this recommendation dosen't work that well, but let's just say it works good enough.

most likely its the psu

HI;

With me it was the trimpots (trim potentiometer), which you can google how to open up the power supply and do the simple adjustment with a philips screwdriver. It's simple, a 10 minute job. Don't worry about voiding the warranty--It's utterly worthless. To repair a PS3 worth $300 is $150 plus shipping I believe, half the cost of buying a brand new one. Since I did the adjustments I have not a single crash or random power-off. The updates fail every time, but that's Sony's incompetent or lazy software and firmware development team who don't understand the product, not a failure of the overworked Chinese worker or mis-calibrated machine that incorrectly adjusted the trimpots.

Yes I have had this problem before it's a pain to do what I'm gonna tell u cause u gotta get it just right u can try taking a price of paper make it kinda thick so it can push up on the board if ur looking At the board facing u looking toward the harddrive enclosure right across from that is we're u put that in there's a video on YouTube about it if u need anymore info I thought it was crazy but it worked for me and still does also u can try loosening the screws a lil bit if that don't work try step 1

The power supply might not fix it. It could be the motherboard that is giving you the result you are experiencing.

My ps3 keep's turning on by itself and after 10 seconds it just turns off and when it turns off it only reads me not anyone by putting my finger on it. HELP ME PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!

Sometimes, u just have to change the power cord. I discovered that after being scammed.

It keep cutting off when I cleaned the fan cause we don't have the money to replace it