Anytime you switch the power on/off there is a surge, this is why lightbulbs quite often POP when the light switch is flipped. After a brown/blackout the same applies, but lots of equipment turn off when the power is cut and won't turn back on till the user flips the switch minimizing the surge to what can normally be expected on daily use and not the higher surge sometimes associated with the power lines being re-energized.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70