I suggest you ’unplug’ the unit from the wall plug for 2 minutes and turn it back on. I hope this works. You might also check the fuzes in the amplifier to see if they need replacing. I doubt the power outage damaged the amplifier. Please keep us posted.
For my audio equipment, I use the TRC 14650006-6 Shockshield White GFCI Plug with Surge Protection. These units trip a CFCI circuit when my power goes out. It Provides GFCI protection for my audio equipment.
When my power goes off, these things trip and TURN OFF the power. I have to MANUALLY reset them to get the power back on. Previously, sometimes the power would go off, back on and off again. My equipment was going on and off. These devices turn off and stay off when the power goes off. After a power failure, I usually wait one hour before turning my equipment back on.
https://www.amazon.com/TRC-14650006-6-Shockshield-Protection-Unmonitored/dp/B000XVG72G
For my audio equipment, I use the TRC 14650006-6 Shockshield White GFCI Plug with Surge Protection. These units trip a CFCI circuit when my power goes out. It Provides GFCI protection for my audio equipment.
When my power goes off, these things trip and TURN OFF the power. I have to MANUALLY reset them to get the power back on. Previously, sometimes the power would go off, back on and off again. My equipment was going on and off. These devices turn off and stay off when the power goes off. After a power failure, I usually wait one hour before turning my equipment back on.
https://www.amazon.com/TRC-14650006-6-Shockshield-Protection-Unmonitored/dp/B000XVG72G