Arcing and popping are not good noises. The main board in a TV is pretty complex so you may not be able to see the area where the sparking occurred without careful scrutiny. Can you smell that smell, the smell of electronic sparking? (a tip of the hat to [link|https://www.lynyrdskynyrd.com/|Lynyrd Skynyrd|new_window=true] )
With the price of TV's so reasonable, I'd recommend just tossing what you have and buying new.