To repair a dishwasher, start by identifying likely problem components, such as the water pump, control board, or drain hose. Troubleshoot common issues like leaks, poor cleaning performance, or no power. Gather necessary tools and ensure safety. Follow step-by-step instructions to diagnose problems based on potential causes. Replace faulty parts if possible or consider calling a technician. Refer to online resources for assistance. Regularly maintain your dishwasher to prevent future issues. Address problems promptly to avoid costly repairs or safety concerns.