Where I live, we have several power outages during the winter. I have lost a TV, dishwasher, range and freezer after one of those power outages. The reason is there are IC chips running these devices and they fail if there is a strong power surge. I wonder if there is surge protection circuits in these appliances?
The answer is no, there is not surge protection built in.
You can put a surge protector on your breaker box for the whole house.
You can put surge protection outlets over the existing outlet. They usually turn 2 outlets to 6, and they have some surge protection built in that can help prevent excess power coming into the appliances at that point. You can also get a home surge protector that can be wired into your house panel to give protection to every circuit right at the breakers.
We have installed a whole house surge suppressor and plug all appliances and electronics into surge protectors. Mostly works great for power fluctuations. We did get a really nearby lightning strike several years ago that fried a handful of unprotected items. But it could have been a lot worse.
I’ve got a whirlpool gold oven about 12 YO. A few years ago it died. Power surge took out the control board. Found a replacement online and ordered it. It came with a surge protection module.