Power Surge Damage to Refrigerator
It is hard to imagine a surge causing a leak .However, a surge can damage the motor and that can often require replacing the compressor. Modern refrigerators usually have some kind of electrical protection to prevent motor damage. Several years ago I had a GE that was damaged by a surge; In that case the "start" capacitor was burned out but it was outside the compressor so I could replace it for several dollars. That could be your situation.