Proper UPS maintenance and repair are crucial for ensuring a reliable backup power supply. Maintenance services typically include routine checks, such as inspecting for dust accumulation and ensuring proper ventilation to prevent overheating, which can significantly shorten the life of a UPS's internal components. The most common repair service is battery replacement, as batteries are the most failure-prone part of any UPS and degrade over time. Other services include fixing faulty inverter/rectifier circuits, replacing aging capacitors, and repairing damaged internal wiring. Many service providers, like Y S Engineering Solution, offer both on-demand repair for specific issues and long-term Annual Maintenance Contracts (AMCs). These contracts often include regular preventive checks and emergency support, which helps businesses avoid costly downtime by addressing potential problems before they lead to a complete system failure.