You probably have quite a few electronic devices in your home, some of them very expensive. Maybe you invested in extended warranty to keep it safe, but will your warranty cover it if it is burnt out from a power surge from your power line? In many cases the answer will be no. That is why you should invest in getting a high quality surge protector. Many times they will come with a warranty that covers the devices connected to it, however this warranty might not always be reliable. It might be worth it to research the company that made the surge protector to find out their track record. There should be a light on the protector indicating if it functions properly. Usually they will only be useful for a few surges, so they need to be replaced in time.
For the surge protector to work properly, it needs to be connected to a properly grounded outlet.