Smart TV screen black but sound working
4.5
The TV has audio and responds to commands, but the display remains completely dark.
Symptoms
- Sound present
- Backlight might be visible in dark room
- Flashlight test shows image
Possible Causes
- Backlight LED failure
- T-Con board failure
- Inverter board failure
Step-by-Step Fix
1
The Flashlight Test
Shine a bright light close to the screen. If you see a faint image, the backlight is dead.
2
Check Connections
Ensure HDMI cables are secure as a loose connection can sometimes drop video but keep audio.
3
Reset Picture Settings
If you can see the menu faintly, try resetting the picture settings.
When to See a Technician
If the flashlight test fails to show an image, the issue is likely the T-Con board or the panel itself.
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