Well, it appears my S3 fell victim (finally) - it powers up with the fan and hard drive spinning, and initially it lit up the front keypad. And once it even had the LEDs and OLED working, but after that, nothing. Subsequent power ups just had the fan and hard drive powering up, and that's it - no more front panel LEDs. Looked at the power supply and all the "pre inductor" ones look bulged, so I used the list in post #62 and ordered 2 complete sets of caps (might as well change them all - who knows how suspect the others are). Good well known brands (Rubycon, United Chemi-Con (Nippon Chemi-Con), Panasonic) My work has a lot of hardware engineering going on, so there's a nice solder lab there so I'll be able to change them all out. I'm hoping that's the problem... the hard drive I had changed a couple of years back. All it took was a power outage - it was working fine yesterday. Guess those crap caps just can't handle the extra power needed at startup.