TV Parts Diagram and Repair Guide

Functional parts diagram

Physical layout and components vary by model.

• 1. HDMI input

  Receives video and audio from a source.

• 2. Main board

  Processes picture, sound and controls.

• 3. Power board

  Supplies operating voltages.

• 4. Display controller

  Times signals going to the display.

• 5. Panel

  Forms the picture.

• 6. Backlight

  Illuminates LCD panels on applicable models.

How symptoms guide inspection

• Sound but no picture

  Before calling Check whether the TV menu appears and try a known source.

  What we check Test the display path and backlight where fitted.

• Lines on screen

  Before calling See whether lines also appear on the built-in menu.

  What we check Differentiate input faults from panel or board faults.

• No power

  Before calling Check the remote batteries and visible power connections.

  What we check Inspect standby and power circuits.

• Apps freeze

  Before calling Check whether other devices use the same network successfully.

  What we check Separate network, software and storage faults.