75S451 - Television TCL - Free user manual and instructions
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| Product Type | 75-inch 4K UHD LED Smart Television |
| Brand | TCL |
| Model | 75S451 |
| Screen Size | 75 inches (189.1 cm) |
| Resolution | 3840 x 2160 (4K UHD) |
| Display Type | Direct-lit LED LCD |
| HDR Support | HDR10 and HLG |
| Refresh Rate | 60 Hz native |
| Smart Platform | Roku TV |
| Connectivity | Wi-Fi 5 (802.11ac), Ethernet, 3x HDMI, 1x USB |
| HDMI Ports | 3, 1 with ARC |
| USB Ports | 1 |
| Audio Output | Digital optical, ARC, headphone jack |
| Speakers | 2 x 8W integrated |
| Power Supply | AC 120V, 60Hz |
| Standby Power | Less than 0.5W |
| Dimensions (with stand) | 66.2 x 40.7 x 13.1 in (168.2 x 103.4 x 33.3 cm) |
| Weight (with stand) | 56.4 lb (25.6 kg) |
| VESA Mount | 400 x 300 mm |
| Remote Control | Roku remote included with batteries |
| Cleaning and Maintenance | Unplug TV and wipe screen with a dry microfiber cloth; avoid liquids and chemical cleaners |
| Safety | Keep ventilation clear; mount securely; avoid heat sources and moisture |
| Spare Parts and Repairability | User-replaceable remote and stand; internal repair by authorized TCL service |
Frequently Asked Questions - 75S451 TCL
How do I set up my TCL 75S451 for the first time?
Connect the TV to a power source and your antenna or set-top box, then press the Power button on the remote. Follow the on-screen Roku setup wizard to select your language, connect to Wi-Fi, and link your Roku account. If a code appears, activate the TV at roku.com/link.
Why is my TCL 75S451 not connecting to Wi-Fi?
Check that your router broadcasts on 2.4 or 5 GHz and that the network password is correct. Restart both the router and TV, then go to Settings > Network > Set up connection to re-scan. If the issue persists, unplug the TV for 30 seconds and try again.
How can I reduce input lag or enable game mode?
Press Home and go to Settings > TV inputs, then select the HDMI input used by your console. Turn on Game mode to lower input lag. Disabling extra picture processing and using a wired internet connection also helps improve responsiveness.
How do I update the Roku software on this TV?
The TV downloads updates automatically, but you can check manually by pressing Home, then going to Settings > System > System update > Check now. Make sure the TV is connected to the internet and leave it powered on until the update finishes.
What should I do if the TCL remote is not responding?
Remove and reinsert the two AA batteries, checking that the polarity matches. Restart the TV by unplugging it for 10 seconds. If the remote still does not work, re-pair it using the button inside the battery compartment or use the Roku mobile app as a temporary remote.
How should I clean the 75S451 screen safely?
Turn off and unplug the TV, then wipe the screen gently with a soft dry microfiber cloth. Do not spray water or cleaning products directly on the panel; lightly dampen the cloth if needed. Avoid pressing hard on the screen to prevent damage.
Can I mount the TCL 75S451 on a wall and what bracket size?
Yes, the TV has a 400 x 300 mm VESA pattern. Use a wall mount rated for at least 25.6 kg (56.4 lb) and secure it to wall studs with the supplied screws. Always follow the bracket instructions and keep the TV away from heat sources.
How do I perform a factory reset?
Press Home and go to Settings > System > Advanced system settings > Factory reset. Choose Factory reset everything to erase all personal settings, or select Reset TV for a quicker reset. Confirm your choice and wait for the TV to restart.
Does the 75S451 support HDR and how can I tell if it is active?
The TV supports HDR10 and HLG. When playing compatible content from streaming apps or an HDMI source, the picture may automatically switch to HDR mode. You can check the input info or the picture settings to see if an HDR badge is shown.
What devices can I connect to the TV's HDMI ports?
You can connect cable boxes, streaming devices, game consoles, Blu-ray players, and soundbars to the three HDMI inputs. Use the ARC-labeled HDMI port for a soundbar so audio can be sent back to the soundbar. Most modern 4K devices require HDCP 2.2 for full resolution.
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USER MANUAL 75S451 TCL
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Product information
Brand : TCL
Model : 75S451
Category : Television