I have some under-counter lights in the kitchen that are the low voltage LED type. They use a transformer block plugged into the house current to power little "pucks" mounted below the cabinet. I have about 5 of these. Every time there is a power outage I lose one of them. They start to blink annoyingly when the power comes on. Not sure why until now. Over a period of a year or so my kitchen just gets darker.

Last night we had a another outage and I guess it was a bad one. Power went off-on three times before it shut down completely. When the power came back on at midnight I found that I had no pucks operating in the kitchen.

This morning I found that my my router didn't work, did some troubleshooting and found that its transformer voltage was about 11.5 vs. the 12V DC stated on the unit. I have a box of unused transformer blocks and found one rated at the correct voltage- it actually runs at 17 or so- and I soldered on the connector from the burned out one and am back in business.

Maybe I have low voltage in the puck light blocks too.