TCL

TCL 55S531 55-Inch 4K QLED HDR Smart TV Renewed

1.9 (6 reviews)
4KHDR

Quantum dot color and Dolby Vision HDR elevate this 55-inch TCL 5-Series into a vivid, voice-assistant-ready 4K smart TV.

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Overview

The TCL 55S531 sits in the 5-Series lineup as a step up from entry-level 4K TVs, and the quantum dot (QLED) panel is the key differentiator. By adding a layer of nano-sized semiconductor particles, the display produces a wider color gamut and higher peak brightness than conventional LED-backlit screens. Paired with Dolby Vision HDR — which adjusts contrast, color, and brightness on a scene-by-scene basis — the result is a picture that looks notably more dynamic and lifelike, whether you are streaming a nature documentary or watching a blockbuster film.

On the smart TV side, the 55S531 runs TCL's Roku-based platform, offering access to thousands of streaming apps and channels. Voice control is unusually flexible here, with support for Alexa, Google Assistant, and Siri, so it integrates smoothly regardless of which ecosystem you have at home. For gamers, Auto Game Mode detects console input and switches to a low-latency picture preset without requiring manual adjustment. This renewed listing includes a wall mount in place of a stand, which is worth noting if you planned on using the TV on a media console — you will need to source a compatible stand separately. Overall, the 55S531 delivers a feature set that punches above its price class, making it a strong option for living rooms, bedrooms, or dedicated media spaces.

Key Features

Free wall mount

To simplify the mounting process, the rear panel of the TV comes with the necessary screw holes to accept an industry standard VESA mount (Base not included)

Superior 4K Ultra HD

Picture clarity combined with the contrast, color, and detail of Dolby Vision HDR (High Dynamic Range) for the most lifelike picture

QLED

Quantum dot technology delivers better brightness and wider color volume, matching the format used by most cinema screens

Works with Alexa, Siri and Google Assistant: Ask Alexa, Siri or Google Assistant to turn on your TV, change channels, control volume, and more

Auto Game Mode

When a compatible game console is detected, game mode will be engaged automatically for the smoothest action, lowest latency and the best picture settings for gaming

Specifications

Brand
TCL
Model
55S531
Screen Size
55 Inches
Resolution
4K Ultra HD (3840 x 2160)
Display Technology
QLED (Quantum Dot)
HDR
Dolby Vision HDR
Smart TV
Yes
Voice Control
Alexa, Google Assistant, Siri
Game Mode
Auto Game Mode
Stand Included
No (wall mount included)
Condition
Renewed

Pros & Cons

👍 Pros

  • Quantum dot technology produces richer, more vibrant colors than standard LED panels at this price point
  • Dolby Vision HDR delivers dynamic scene-by-scene optimization for contrast and color
  • Built-in compatibility with Alexa, Google Assistant, and Siri covers all major voice ecosystems
  • Auto Game Mode reduces input lag automatically when a console is detected
  • A free wall mount is included, saving the cost of purchasing one separately

👎 Cons

  • No stand is included, so wall mounting is required unless you buy a compatible stand separately
  • As a renewed unit, cosmetic imperfections or reduced panel lifespan are possible
  • The 5-Series lacks local dimming zones found in higher-tier TCL models, limiting contrast in dark scenes
  • 60Hz native refresh rate may not satisfy users looking for smoother motion in fast-paced content

Frequently Asked Questions

QLED uses a quantum dot layer to enhance color volume and brightness compared to standard LED TVs. On the 55S531, this results in more vivid, accurate colors across a wider range of content.
No, this renewed unit includes a free wall mount but does not come with a stand. You will need to wall-mount it or purchase a compatible stand separately.
The 55S531 is compatible with Alexa, Google Assistant, and Siri, allowing you to control the TV, search for content, and manage smart home devices using voice commands.
Yes, it features Auto Game Mode, which automatically optimizes picture settings for lower input lag when it detects a connected gaming console.
It supports Dolby Vision HDR, which provides scene-by-scene picture optimization for enhanced contrast, brightness, and color detail in supported content.