Article ID : 00298459 / Last Modified : 11/08/2023Print

Troubleshooting TV HDMI Issues: 6 fixes for unstable signal, jerky screen or signal loss

    Using an HDMI (High-Definition Multimedia Interface) cable is the most common way to connect devices like computers, gaming consoles, set-top boxes and Blu-Ray players to your TV due to its capacity to deliver high-quality audio and video. Sometimes, though, you might experience problems like a shaky or flickering screen or even losing the signal. Such TV HDMI issues can possibly be fixed by checking these simple 6 items:

    1. Check if your cable is properly connected
    2. Try different HDMI ports and avoid unnecessary extra devices
    3. Check TV settings (input) and connected device settings
    4. Disconnect extra devices
    5. Update your TV and device software
    6. Avoid interference from other electronic devices. 

    Check Your Cable and Connections

    First, make sure the cable connecting your TV to the device is in good condition. Also, check if the cable is securely plugged into both your TV and the device. Look for any physical damage or bent connectors. If the cable looks damaged, try replacing it with a new HDMI cable.


    Try Different HDMI Ports

    If your TV has multiple HDMI ports, try connecting your device to a different port, preferably the one marked with ARC or eARC


    Check Your TV and Device Settings

    Mismatched settings between your TV and the connected device can cause problems. For example, try to switch the TV input. Or, check the resolution and refresh rate settings on the connected device (like a computer or gaming console) and ensure they match what your TV supports. If needed, change the settings to the recommended ones for your TV.


    Avoid Extra Devices (if applicable)

    If you use a device like an AV receiver or switcher, try connecting your device directly to the TV. Using these extra devices can sometimes cause problems, so connecting directly may solve the issue.


    Update Your TV and Connected Device Software

    Sometimes, outdated software can cause HDMI issues and updating your devices might solve the problem. Check if there are any updates available for your TV and connected device. You can find all Sony-related updates on this support website. Otherwise, visit the manufacturer or provider's website.


    Reduce Interference

    Electronic devices like Wi-Fi routers or microwaves can interfere with the HDMI signal. To reduce this, keep these devices away from the cable and your TV. Also, use high-quality HDMI cables with good shielding to protect against interference.