I have a model PCG-R505EL that will not power on. I have tried all the suggestions on the Sony site for such a problem.
I have held down the power button for 15 seconds (several times) and for 1-2 minutes. When I hold down the power
button both the power and battery LED flash simultaneously at the rate of about two per second. If I simply press the
power button they both flash simultaneously one time. I have removed the battery and tried powering it on. I have
removed and reinserted the RAM chip (tried powering it on with the chip out, and then with it back in). I have tried
turning it on with the battery removed too. I also pressed the reset button on the underside of the laptop while it was
off, and while holding the power button in. The power LED for the docking station for this laptop comes on when the
AC adapter is hooked up to it, so I am fairly sure the AC adapter is okay. I also removed the hard drive and tried with
it out but it made no difference.
Any suggestions on some other things to try would be welcomed.