[SOLVED] Motherboard - worst case scenario

[R James]

Asus P8Z77-V Intermittent reset. Anywhere from several times in a minute out to once every week or two. I hear a relay click and the 24 pin power connection pins are suspect. Resoldered every power rail pin on the board which gave a slight improvement. Tried 2 different power supplies, 2 video cards, swapped RAM, unplugged everything except vital connections. All voltage rails within specs. Only recourse right now looks like shotgunning 54 capacitors.
In need a schematic. Without that or a quality thermal camera troubleshooting looks impossible.
Suggestions?

 

[R James]

Problem solved. Relay in the sleep circuit was making poor contact intermittently which in turn caused a watchdog circuit to detect out of acceptable parameter voltage(s). Solved by finding and tapping on that relay and never using the sleep mode again.

Genius. Mom board with 10 year electrolytics and a relay good for a couple thousand operations.