My son turned on the burner to make something and then there was a pop and stove would not work.

First I removed the burners and pulled the stove out to get the back cover off. Removed the back cover after main power was shut off. Removed old burner terminal blocks and replaced with new ones. Replaced back cover and pushed stove back into place. Turned on main power to stove checked burners and they worked. DO NOT REPLACE OR DO ANY ELECTRICAL WORK ON ANY MAJOR APPLIANCE WITH OUT FIRST TURNING OFF THE MAIN POWER SOURCE.