The abnormal noise of a top-load washing machine can be caused by several factors. 

Here are some possible reasons and their corresponding solutions:

1. Uneven placement: If the washing machine is not placed on a flat and stable surface, it may produce noise during operation. Ensure that the machine is sitting firmly on a flat ground, and if necessary, use leveling feet or pads to adjust its stability.

2.Excessive load or unbalanced load: Placing too much clothing or an unbalanced load in the washing machine can cause it to shake and produce noise. Try to distribute the laundry evenly and avoid overloading the machine.

3.Loose internal parts: Over time, internal parts of the washing machine may become loose or worn out, leading to noise. Regular maintenance checks and tightening of loose parts can help resolve this issue.

4.Motor or bearing issues: The motor or bearings of the washing machine may wear out over time, causing abnormal noises. In such cases, it may be necessary to replace these parts.

5.Belt issue: The belt that drives the washing machine's drum may become loose or worn, resulting in noise. Checking and adjusting the belt tension can help solve this problem.

To address these issues, you can try the following steps:

• Adjust the placement of the washing machine to ensure it is stable and level.

• Check and tighten any loose internal parts.

• Distribute the laundry evenly and avoid overloading the machine.

• If the noise persists, consider calling a professional service for maintenance or repair.

Remember, safety should always be your first concern when dealing with appliances. 

If you are not confident in performing these checks or repairs, it is best to seek the assistance of a qualified service technician.