Introduction
This manual provides essential information for setting up, operating, and maintaining your TCL 75S425 75 Inch 4K UHD HDR Smart Roku TV. This television delivers stunning Ultra HD picture quality with four times the resolution of Full HD, enhanced by High Dynamic Range (HDR) technology for lifelike colors and contrast. The integrated Roku TV platform offers seamless access to a vast library of streaming content and smart features. Please read this manual thoroughly to ensure proper use and to maximize your viewing experience.
What's in the Box
Upon unpacking your TCL 75S425 TV, please ensure all the following components are present:
- TCL 75S425 75 Inch 4K UHD HDR Smart Roku TV
- Remote control
- Power Cable
- TV Stand/legs (2 pieces)
- Screws for stand assembly

Figure 1: TCL 75S425 75-inch Roku TV with home screen interface.
Setup
1. Physical Setup
Your TCL 75S425 TV can be placed on a stand or mounted on a wall. Choose the method that best suits your environment.
Attaching the TV Stand
- Carefully place the TV screen-down on a soft, clean surface to prevent damage.
- Align each stand leg with the corresponding slots on the bottom of the TV.
- Secure each leg with the provided screws, ensuring they are tightened firmly.

Figure 2: Detail of the TV stand attachment.
Wall Mounting
If you choose to wall mount your TV, ensure you use a VESA-compatible wall mount (200mm x 200mm). Follow the instructions provided with your wall mount kit. Professional installation is recommended.

Figure 3: Front view of the TCL 75S425 TV with stand.
2. Initial Power On & Network Connection
- Connect the power cable to the TV and a power outlet.
- Press the power button on the remote control or on the TV itself.
- Follow the on-screen prompts to select your language and connect to your Wi-Fi network. The TV supports dual-band Wi-Fi. Alternatively, you can connect via an Ethernet cable.
3. Roku Account Setup
The Roku TV interface will guide you through creating a new Roku account or logging into an existing one. A Roku account is required to access streaming channels and smart features.
Operating Your TV
1. Remote Control Overview
The included Roku remote control provides intuitive navigation and quick access to popular streaming services. It features dedicated buttons for Netflix, Disney+, Apple TV, and Amazon Prime Video.

Figure 4: TCL Roku TV Remote Control.
2. Smart TV Features (Roku OS)
The Roku OS provides a user-friendly interface to access over 500,000 movies and TV episodes across thousands of streaming channels. You can also integrate the TV with voice assistants like Alexa and Google Assistant for convenient control.
3. Connecting External Devices
The TV offers a variety of input and output ports for connecting external devices:
- HDMI Inputs (3): For connecting Blu-ray players, gaming consoles, cable boxes, etc.
- USB Input (1): For media playback from USB drives.
- Ethernet (1): For wired network connection.
- RF Input (1): For connecting an antenna.
- SPDIF Digital Audio Optical (1): For connecting to external audio systems.
- Audio Output Headphone (1): For private listening.
- AV Input (1): Composite Video plus L&R Audio In for older devices.

Figure 5: TV Input/Output Ports.
4. Picture & Sound Settings
Access the TV's settings menu via the remote to adjust picture modes (e.g., Movie, Normal, Vivid), brightness, contrast, and color. Sound settings allow for adjustments to bass, treble, and various audio modes to optimize your listening experience.
Maintenance
To ensure the longevity and optimal performance of your TV, follow these maintenance guidelines:
- Cleaning: Gently wipe the screen with a soft, dry, lint-free cloth. For stubborn marks, use a screen-specific cleaning solution applied to the cloth, not directly to the screen.
- Software Updates: The Roku TV automatically checks for and installs software updates. Ensure your TV is connected to the internet to receive these updates, which improve performance and add new features.
- Ventilation: Ensure adequate airflow around the TV to prevent overheating. Do not block ventilation openings.
Troubleshooting
If you encounter issues with your TV, try the following basic troubleshooting steps:
- No Power: Check if the power cable is securely connected to both the TV and the power outlet. Try a different outlet.
- No Picture/Sound: Verify that the correct input source is selected. Check all cable connections to external devices.
- Network Connection Issues: Restart your router and modem. Reconnect the TV to your Wi-Fi network via the settings menu.
- Remote Not Responding: Replace the batteries in the remote control. Ensure there are no obstructions between the remote and the TV.
For more detailed troubleshooting, refer to the online support resources available on the TCL or Roku websites.
Specifications
| Feature | Specification |
|---|---|
| Brand | TCL |
| Model Number | 75S425 |
| Screen Size | 75 Inches |
| Display Technology | LED |
| Resolution | 4K UHD (3840 x 2160) |
| High Dynamic Range (HDR) | Yes |
| Refresh Rate | 120 Hz CMI |
| Smart Platform | Roku TV |
| Voice Assistant Compatibility | Alexa, Google Assistant |
| Connectivity | Dual-band Wi-Fi, Ethernet |
| HDMI Inputs | 3 |
| USB Ports | 1 |
| Audio Outputs | SPDIF Digital Audio Optical (1), Headphone (1) |
| AV Input | Composite Video plus L&R Audio In (1) |
| Dimensions (without stand) | 66.1" W x 38" H x 3.5" D |
| Dimensions (with stand) | 66.1" W x 40.7" H x 15.9" D |
| Weight | 101 pounds |
| Wall Mount Standard | VESA 200mm x 200mm |

Figure 6: TV Dimensions.
Warranty & Support
For detailed warranty information and customer support, please visit the official TCL website or contact their customer service. Keep your purchase receipt for warranty claims.





