Dead patches of lawn are easy to fix. Here are the steps:

• Remove the dead or damaged section of lawn and an inch or two of the soil beneath it, and replace it with fresh, weed-free soil that is similar to the rest of the lawn, and seed (or a section of sod).
• Loosen the soil.
• Firm the new soil by tamping lightly, and then level it.
• Sprinkle seed over the prepared soil and lightly cover it with a thin layer of soil. Press the seed into the soil by gently pressing with your hands.
• Keep the seed bed moist until the seed germinates.