Test the parts
Testing the parts of an appliance is a critical step in identifying the source of a problem. Without testing, it’s difficult to determine which part is causing the issue. Testing can help you diagnose the problem and identify the specific part that needs to be repaired or replaced. When testing parts, start by turning off the power to the appliance and disconnecting it from any electrical source. This can help prevent personal injury or damage to the appliance. Then, use a multimeter or other testing tool to measure the resistance, voltage, or continuity of the part.
If the reading is outside of the normal range, it may indicate that the part is faulty and needs to be replaced. For example, a heating element with a reading of zero ohms may indicate a short circuit and require replacement.