How to Troubleshoot Screen and Picture Issues on Your Sony Tv

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1. Check Basic Connections

• Ensure the power cable is firmly connected.
• Verify the HDMI, AV, or antenna cables are properly plugged in. Loose connections often cause flickering, no signal, or distorted images.
• Try a different HDMI port or cable to rule out cable faults.

2. Perform a Power Reset

• Turn off the TV and unplug it for 1–2 minutes.
• Plug it back in and power it on.
• This clears temporary system glitches that may affect the display.

3. Verify Input Source

• Press the Input or Source button on your remote.
• Make sure the correct input (HDMI, AV, USB, etc.) is selected.
• Wrong input selection may display a blank or distorted screen.

4. Check for Software Updates

• Go to: Settings → Support → Software Update → Update Now.
• Outdated firmware can cause display bugs or compatibility issues with streaming apps.

5. Adjust Picture Settings

• Navigate to: Settings → Display & Sound → Picture → Picture Mode.
• Try modes like Standard, Cinema, or Vivid.
• If the screen is too dark, adjust Brightness, Contrast, or Backlight.
• For color distortion, reset picture settings to factory defaults.

6. Run a Self-Diagnosis Test

Most Sony Bravia TVs have a built-in tool:

• Go to Settings → Device Preferences → Self Diagnosis → Picture Test.
• This checks if the problem is with the TV panel or the input source.

7. Check External Devices

• Connect another device (laptop, gaming console, DVD player) to the TV.
• If the picture is fine with other devices, the issue may be with your decoder, set-top box, or media player.
• If all devices show problems, it’s likely the TV panel or settings.

8. Common Sony TV Picture Issues & Fixes

• No Picture / Black Screen → Check power, input source, and perform a reset.
• Distorted Colors / Lines → Try a different input; could be a faulty panel.
• Flickering Screen → Adjust backlight, check for electrical interference, or reset.
• Half Screen / Dark Patches → Likely a backlight or panel issue – needs professional repair.
• Ghosting / Motion Blur → Enable MotionFlow or Clear Mode in settings.

9. Factory Reset (Last Resort)

If none of the above works:

• Go to Settings → Device Preferences → Reset → Factory Data Reset.
• This erases all settings and apps, restoring the TV to its original state.

10. When to Call for Professional Repair

If you notice:

• Cracked screen or physical damage
• Vertical/horizontal lines that don’t disappear
• Backlight failure (dark screen but with sound)
• Frequent restarts or freezes even after reset

👉 It’s best to contact a certified Sony TV repair technician for diagnosis and replacement of parts like the T-Con board, backlight, or power board.