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Troubleshooting for a TV with no power LED illumination.
Diagnosing issues where backlights fail to activate or stay on.
Steps for troubleshooting lack of video/OSD despite power indicators.
Procedure for resolving power LED shutdown shortly after power-up.
Essential warnings and precautions for safe TV servicing.
Test for dangerous AC voltage on exposed parts to ensure safety.
Techniques to prevent semiconductor damage from static electricity.
How to access and navigate the TV's on-screen service menu.
Details on Option Data 1 (OP1) and Option Data 2 (OP2) for menu settings.
Explanation of the sub-CPU's power failure detection and response mechanism.
Instructions for removing the TV's stand base and rear cabinet panel.
Steps for removing the power unit and main board assemblies.
Procedures for removing speakers, RC board, and button board.
Guides for interpreting capacitor and resistor markings and their values.
Lists service names and Japan BOM part numbers for major TV assemblies.
Diagrams showing component and test point locations on the analog board.
Diagrams showing component and test point locations on the digital board.
Diagrams showing component and test point locations on the power board.
Diagrams for key switch and RC/LED board component locations.
Illustrates how power is distributed across various boards and components.
Shows signal flow between different units like Analog, Digital, and Panel.
Functional block diagram of the audio amplifier IC.
Functional block diagram of the main signal processor IC.
Block diagrams for USB protection and voltage regulator ICs.
Functional block diagrams for memory controller and power management ICs.
Step-by-step guide for diagnosing 'No Power' issues.
Diagnostic steps for when the TV displays no video on any input.
Troubleshooting guide for scenarios where no sound is outputted.
Explanations of symbols, conventions, and notations used in schematic diagrams.
Visual references for pin configurations of common electronic components.
Diagrams showing connections between LCD panel, inverter, and control boards.
Guides for interpreting capacitor and resistor markings and their values.
Circuit diagrams for the analog processing unit of the TV.
Circuit diagrams for the digital processing unit and key input controls.
Circuit diagrams for the remote control pre-amplifier and light sensor.
Circuit diagrams for the key switch array and power control sections.
Circuit diagrams for the power supply and protection circuits.
General
