How to Fix Sony Bravia Red LED Blinks 4 Times

Quick Diagnosis

A Sony Bravia TV with a red standby LED blinking exactly four times indicates a backlight power failure or temperature limit warning. The TV's protection circuit shuts the system down to prevent thermal damage to the LEDs or panel wiring.

Technical diagnostic blueprint diagram for the Sony Bravia showing symptoms of Red LED Blinks 4 Times.

Step-by-Step Resolution

  1. 1

    Unplug the TV's power cord from the wall outlet and disconnect all external cables (HDMI, USB, coax).

  2. 2

    Use a dry microfiber cloth to clean all dust and lint from the ventilation slots on the rear and top edges of the TV chassis.

  3. 3

    Relocate the TV if it is enclosed in an entertainment center or placed too close to a wall, ensuring at least 4 inches of open air clearance on all sides.

  4. 4

    Press and hold the physical Power button on the TV frame (usually on the side or bottom) for 30 seconds to drain power capacitors.

  5. 5

    Leave the TV completely unplugged for 10 minutes to allow the internal temperature sensors to reset.

  6. 6

    Plug the power cord directly into a functional wall outlet, avoiding power strips.

  7. 7

    Turn the TV on using the physical power button on the frame to test.

Alternative Causes & Edge Cases

  • On older Bravia models, this error code can point to a faulty G-board (power supply board) or LD-board (backlight driver board) containing blown capacitors.
  • A loose internal ribbon cable connecting the mainboard to the LED driver can also trigger the 4-blink security code.