Now that the device is disassembled here is a quick explanation of how the device works.

Electricity flows from the 120 V AC outlet. The power source is connected to three wires, the yellow wire, black wire and white wire.

The yellow wire connects directly to the switch. The white wire connects to the light, and then into the switch. The black wire also connects from the power source to the switch.

From the switch there are two black wires and a blue wire that are leaving on the left side. On the right side there is another black wire that leaves the switch.

The temperature settings control which wires current will flow through during the cooking process.

If the Keep Warm setting is turned on the switch, current will flow through the blue wire around the strip.

If the LO setting is turned on the switch, current will flow through the black wires around the switch.

If the HI setting is turned on the switch, current will flow through both the black and blue wires.