Name a common sign that a power tool needs repair.

A common sign that a power tool needs repair is the presence of unusual noises or vibrations. When a tool is functioning properly, it typically operates smoothly and quietly. If the tool begins to produce unexpected sounds, such as grinding, rattling, or screeching, this could indicate that components are wearing out, misaligned, or damaged. Similarly, excessive vibrations might suggest that parts are loose or that there is an imbalance in the tool. Recognizing these signs early can help prevent further damage and ensure the safety and effectiveness of the tool during use.

In contrast, consistent power output, bright LED indicators, and clean and smooth operation are all signs that indicate the tool is functioning correctly and does not need repair. Consistent power output means that the tool is delivering the right amount of energy to operate effectively, while bright LED indicators typically signal that the tool is powered on and functioning as intended. A clean and smooth operation reflects that the tool's moving parts are properly lubricated and in good condition.