Internal Component OverviewThe internal chassis typically contains several key boards, each responsible for different functions:Main Board: Handles video processing, software, and external inputs like HDMI.Power Supply Board: Converts wall electricity to the lower voltages needed by the TV's internal components.T-Con Board: Manages image display signals between the main board and the panel.Visual Inspection ChecklistBefore testing with advanced tools, look for these physical signs of damage:Capacitors: Inspect the power supply board for "bloated" or leaking capacitors, which often have bulging, rounded tops instead of being flat.