Disconnect the power from your Frigidaire refrigerator. Checking the evaporator coils while the refrigerator is still running can result in shock.
Open the freezer portion of your Frigidaire refrigerator. Identify the panel sitting at the back of the freezer. Remove all items that stand in the way of the panel, such as an icemaker, shelves and bins.
Remove all retaining screws from the panel. Typically, there are four to six screws. After removing the screws, place the panel outside of the freezer.
Identify the evaporator coils, which look like a series of looping coils sometimes covered by a grate-like object.