I’ve had my P20 for little over a year and I have been very pleased with it. Today I noticed this problem. All equipment was down. My question is: Is this what happens when there is a surge? It did storm today. I shut it down with the rear switch and rebooted. All equipment came on and the P20 appeared to behave normally. THD 2% to 0.1%. Sound seemed ok but not as good as when equipment is warmed up. What do you guys think?