On one of these groups, I posted about 6 months ago about the adapter for my router failing after a power outage. Apparently it's not a power surge but just normal unplugging and replugging that is bad for many things (especially maybe if they can cool off in between). I used a universal adapter for a while and bought the exact replacement adapter, with the D-Link label, on Ebay. Everything fine.
Last night we had another power failure and today, after futile attempts to get my mail, I see that none of the lights on the router are on. I hadn't even gotten around to taking the universal adapter back to it's drawer in the basement!
So I switched to that and it didnt' work, but after I unplugged and plugged it in 3 times, ALL the lights on the router went on and stayed on. I ended up unplugging it from the adapter at least 10 times before it finally started working. And now it's been fine for hours.