I recently grabbed a launch PS3, 60gb CECHA01. it wouldn't run, but had a seemingly obvious problem. As it turns out the easy to fix problem was anything but.
Connected to a TV via HDMI and powered on. After about 5 seconds the unit goes back to standby.
Entered recovery menu. Option 2 gave me an error that the hard drive wasn't accessible. Tried option 5 to reformat. Got error 800102b. Followed a tutorial explaining how to repartition the drive then reinstalled it. Still returns to standby 5 seconds after powerup.
Tried all options on the recovery menu, one by one. Each seems to complete but the unit still returns to standby 5 seconds after powering on.
Pulled the current hard drive and tried another. No change.