Checking an AC inverter PCB (Printed Circuit Board) involves several steps to diagnose and troubleshoot issues. Here's a general guide: - Visual Inspection: - Check for Physical Damage: Look for signs of physical damage, such as burn marks, cracks, or broken components. - Inspect Solder Joints: Verify that solder joints are secure and not damaged. - Power Supply Check: - Verify Input Voltage: Ensure the input voltage matches the PCB's requirements. - Check Power Supply Components: Inspect power