If all else fails, a full factory reset will restore the TV to its original settings. Warning: This erases all apps and account data. 5. Vertical Lines or Distorted Picture
If this voltage is missing or fluctuating, your issue resides strictly within the primary or standby generation circuit of the PSU. If it is present but the front standby LED is dead, the main board microcontroller or the physical IR sensor board is likely defective. 2. Forcing the Power Supply On (The "PS-ON" Test)
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If one half of the screen displays a clean, crisp image while the disconnected side remains white or black, your T-Con board is functioning correctly. The issue is a short circuit inside the disconnected half of the physical glass panel. If all else fails, a full factory reset
Failed capacitors are a leading cause of power supply degradation. Look closely at the tops of the metallic canisters. A healthy capacitor has a completely flat top. If the top is domed, bulging, or showing brown crusty residue, it has dried out or ruptured and must be replaced. For definitive testing, desolder the component and measure it with an ESR (Equivalent Series Resistance) meter. Testing Surface-Mount Fuses
DC. Always discharge this capacitor using a dedicated discharging pen or a high-wattage resistor before handling the underside of the PCB. Never short it with a screwdriver. When lifting large displays ( 55′′55 double prime Vertical Lines or Distorted Picture If this voltage
: Schematic diagrams for OLED, LED, LCD, and Plasma power supply units, as well as T-CON boards. Troubleshooting Common Symptoms