A flickering TV screen usually means a loose cable, bad input, or picture setting issue.
Common causes
- Loose HDMI cable
- Wrong refresh rate
- Faulty input
- Backlight issues
1. Loose HDMI cable
The most common cause.
Quick fixes:
- Unplug and replug HDMI
- Try a different port
- Try a different cable
2. Wrong refresh rate
Some TVs struggle with certain settings.
Quick fixes:
- Change picture mode
- Reset display settings
3. Faulty input
The device may be the issue.
Quick fixes:
- Switch to another device
- Try a different app
4. Backlight issues
Older TVs flicker when failing.
Quick fixes:
- Lower brightness
- Turn off energy‑saving mode
What to try first
Check the HDMI cable.
When to call a professional
If flickering happens on every input.