The Star-Max® 24 inch Electric Griddle (524TGF) is a 24-inch griddle for the countertop that is great for a crowded commercial kitchen. It has a snap-action thermostat inside the gribble plate for quick adjustment when changing the temperature from anywhere between 150 and 450 degrees Fahrenheit. Every 12 inches of the Star Manufacturing - 524TGF - Star-Max® 24 inch Electric Griddle has a 4,000-watt heating element for quick cooking with a fast recovery time. It also comes with a grease trough for sanitation, along with a splash guard and grease chute for easy cleaning.
It could be several things from the element to a wire. Probably best to find a local restaurant repair technician or electrician open it up and find out what is broken so you can get it fixed. We sell all the parts for these if you need them call us with the model and serial number at 888-388-6372.