To Next PageTo Next PageWhat to do if my Sony KDL-40LX900 TV has no green power LED?
If your Sony TV has no green power LED illuminated, ensure the power connections are properly secured. If the issue persists, the power board may need replacement.
Servicing instructions for qualified personnel only.
Use isolation transformer to avoid shock hazard from live chassis.
Guidelines for safe TV transport to prevent injury or damage.
Critical components identified by shading and ! mark require Sony parts.
Replace with same or equivalent batteries to avoid explosion risk.
Ground yourself with a wrist band; secure panel using mounting holes.
Use guidelines to avoid material degradation and ensure no dust or fingerprints.
AC leakage must not exceed 0.5 mA; measure by three methods.
Identify earth ground using cold-water pipes or cover-plate screws.
STANDBY LED flashes indicate problem cause; results displayed on screen.
Visual representation of LED flash patterns and their meanings.
How to bring up past failure occurrences on the screen for confirmation.
Detailed explanation of the self-diagnosis screen elements and their meanings.
Procedures to clear error history, error count, and panel operation time.
How to exit the self-diagnostic screen by turning off power.
Lists models associated with disassembly procedures.
Step-by-step instructions to access the service mode using the remote commander.
Table detailing remote commander functions for service mode operations.
Procedure for adjusting white balance settings in the service mode.
Process for saving data changes in Chassis or Sub service modes.
Instructions for changing data within Digital service mode categories.
Procedure for writing data in the '002 MODEL' category, especially after replacing the B board.
How to set the TV to its shipping condition via Digital service mode or alternative button combination.
Adjusting the emitter LED output power strength in Sub service mode.
Chart for diagnosing symptoms based on power LED blinking and other indicators.
Flowchart to guide troubleshooting based on TV symptoms and functions.
Troubleshooting steps for issues related to the TV not powering on.
Diagnosing issues based on the number of times the standby LED blinks.
Troubleshooting for 3 blinks, covering DC Alert, Audio Error, and Communication errors.
Troubleshooting steps for a balancer error indicated by 4 standby LED blinks.
Troubleshooting for T-con errors indicated by 5 standby LED blinks.
Troubleshooting for backlight errors indicated by 6 standby LED blinks.
Troubleshooting for temperature or RGB sensor errors indicated by 7 blinks.
Steps to diagnose and resolve issues where the TV displays no picture.
Steps to diagnose and resolve issues where the TV displays no sound.
Troubleshooting for malfunctions of TV buttons and remote commander buttons.
Steps to troubleshoot issues with the infrared remote commander not controlling the TV.
Troubleshooting for wired and wireless network connectivity issues.
Troubleshooting steps for camera malfunctions, including error messages and image clarity.
Troubleshooting steps for 3D malfunctions, such as the 3D menu not appearing.
High-level overview of the TV's system components and their interconnections.
Visual identification and location of major circuit boards within the TV chassis for 40-inch models.
Circuit board layout specifically for 52-inch models KDL-52LX900, 904, and 905.
Circuit board layout specifically for 60-inch models KDL-60LX900, 903, and 905.
Exploded view and parts list for chassis 1 of 40-inch models KDL-40LX900, 903, 904, 905.
Exploded view and parts list for chassis 2 of 40-inch models KDL-40LX900, 903, 904, 905.
Exploded view and parts list for chassis 3 of 40-inch models KDL-40LX900, 903, 905.
Identification and illustration of screws used in exploded views for 40-inch models.
Exploded view and parts list for chassis 1 of 52-inch models KDL-52LX900, 904, 905.
Exploded view and parts list for chassis 2 of 52-inch models KDL-52LX900, 904, 905.
Exploded view and parts list for chassis 3 of 52-inch models KDL-52LX900/903/905.
Identification and illustration of screws used in exploded views for 52-inch models.
Exploded view and parts list for chassis 1 of 60-inch models KDL-60LX900, 903, 905.
Exploded view and parts list for chassis 2 of 60-inch models KDL-60LX900/903/905.
Exploded view and parts list for chassis 3 of 60-inch models KDL-60LX900/903/905.
Identification and illustration of screws used in exploded views for 60-inch models.
List of accessories and connectors for 40, 52, and 60 inch models.
List of instruction manuals available for different model numbers.
Part number for the remote commander.
List of miscellaneous parts like connectors and 3D glasses.
Instructions for safely handling the TENGO panel, including correct grip and placement.
High-level overview of the TV's system components and their interconnections.
Visual identification and location of major circuit boards within the TV chassis for 40-inch models.
Circuit board layout specifically for 52-inch models KDL-52LX900, 904, and 905.
Circuit board layout specifically for 60-inch models KDL-60LX900, 903, and 905.
Schematic details for the main microcontroller and input interfaces.
Continued schematic details for the main microcontroller and input interfaces.
Further schematic details for the main microcontroller and input interfaces.
Additional schematic details for the main microcontroller and input interfaces.
Schematic details of PC, D1/Component, SCART/Component inputs and video switching.
Schematic details for audio output and SPDIF output interfaces.
Schematic details for PCI interface and EVI I/O interfaces.
Schematic details for HDMI interfaces, DDC lines, and CEC communication.
Schematic details for tuner input, LNB power, and audio circuits.
Schematic details for component video inputs and SCART inputs.
Schematic details for SCART(RA) input and audio output connections.
Schematic details for PCI interface, EVI I/O, and HDMI DDC lines.
Schematic details for HDMI input interfaces (A, B, C, D).
Schematic details for PC input, HP output, and I2C EEPROM interface.
Schematic details for USB interfaces, Ethernet interface, and WiFi module connections.
Schematic details for power supply control, TDR, and other interface signals.
Schematic details for panel interface signals and control lines.
Schematic details for remote control (SIRCS) and LED control signals.
Schematic details for video switching, CVBS input, and PC input signals.
Schematic details for HDMI interfaces and PC input connections.
Schematic details for power supply management and control signals.
Schematic details for various power supply circuits, including +3.3V, +1.8V, D+1.05V, etc.
Schematic details for CI interface, CAM interface, and TS signals.
Schematic of the GE4A power supply section, detailing AC input and primary stage.
Schematic of the GE4A power supply section, detailing secondary stage and output voltages.
Schematic of the GE4B power supply section, detailing AC input and primary stage.
Schematic of the GE4B power supply section, detailing secondary stage and output voltages.
Schematic of the GE5 power supply section, detailing AC input and primary stage.
Schematic of the GE5 power supply section, detailing secondary stage and output voltages.
Schematic of the HEM board's 3D interface circuitry.
Schematic of the HLR board's LED, IR, and light sensor components.
Parts list common to all models and specific to BEHS board.
Parts list specifically for GE4A board (60 inches only).
Parts list specifically for GE4B board (52 inches only).
Parts list specifically for GE5 board (40 inches only).
Parts list for the HEM board.
Parts list for the HLR board.
Common parts for the BAL board used across multiple models.
General