TCL
TCL 55S517 55-Inch 4K Roku Smart TV
★★★★★
Experience Stunning 4K UHD with the TCL 55S517 Roku Smart LED TV The TCL 55S517 is a 55-inch 4K Ultra HD Roku Smart LED TV that delivers exceptional picture quality and seamless streaming entertainment. With four times the resolution of Full HD, Dolby Vision HDR technology, and a user-friendly i...
$387.04*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.
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Overview
Experience Stunning 4K UHD with the TCL 55S517 Roku Smart LED TV
The TCL 55S517 is a 55-inch 4K Ultra HD Roku Smart LED TV that delivers exceptional picture quality and seamless streaming entertainment. With four times the resolution of Full HD, Dolby Vision HDR technology, and a user-friendly interface, it provides an immersive viewing experience.
Specifications:
- Screen Size: 55 inches (Diagonal)
- Resolution: 4K Ultra HD
- Technology: LED
- Smart Functionality: Roku TV
- High Dynamic Range: Dolby Vision
- Inputs: 3 HDMI 2.0 w/HDCP 2.2 (1 ARC), 1 USB 2.0, AV Input Composite plus L and R Video, RF Input (NTSC, ATSC) 1, Ethernet 1, SPDIF Digital Audio Optical 1, Audio Output Headphone 1
- Dimensions (Without Stand): 48.3" (W) x 28" (H) x 3" (D)
- Dimensions (With Stand): 48.3" (W) x 30" (H) x 10.6" (D)
- Weight (Without Stand): 32 lbs
Key Features
Your purchase includes One TCL 55-Inch 4K Ultra HD Roku Smart LED TV, 2018 Model – 55S517, One start guide, one Remote control Roku TV RC580 with batteries
TV dimensions: Without stand- 48.3" W x 28" H x 3" D. With Stand- 48.3" W x 30" H x 10.6" D. Weight without stand: 32 lbs. Screen size: 55” Diagonal
Inputs: AV Input Composite + L&R Video, RF Input (NTSC, ATSC) 1, Ethernet 1, USB 1 USB 2.0, HDMI 3 HDMI 2.0 w/HDCP 2.2 (1 ARC), SPDIF Digital Audio Optical 1, Audio Output Headphone 1
Pairs 4K ultra HD picture clarity with the contrast, color, and detail of Dolby Vision high dynamic range (HDR) for the most lifelike picture. With the combination of 4K ultra HD, HDR support, a dedicated game mode, and an amazingly low input lag, this is one of the best reviewed gaming TVs out there.
Smart functionality offers access to thousands of streaming channels featuring more than 500,000 movies and TV episodes via Roku TV. Contrast Control Zones is not included in 5 Series.
Specifications
Brand
TCL
Model
55S517
Year
2018 Model
Screen Size
55 inches Diagonal
Resolution
4K Ultra HD
Display Technology
Smart LED TV
HDR Support
Dolby Vision HDR
Smart TV Platform
Roku TV
Dimensions (Without Stand)
48.3" W x 28" H x 3" D
Dimensions (With Stand)
48.3" W x 30" H x 10.6" D
Weight (Without Stand)
32 lbs
HDMI Inputs
3 (HDMI 2.0 w/HDCP 2.2, 1 ARC)
USB Inputs
1 (USB 2.0)
Ethernet Input
1
Other Inputs
AV Input Composite + L&R Video, RF Input (NTSC, ATSC)
Audio Outputs
SPDIF Digital Audio Optical 1, Headphone 1
Special Features
Dedicated game mode, Low input lag
Included Accessories
Start guide, Remote control Roku TV RC580 with batteries
Contrast Technology
Contrast Control Zones not included
Pros & Cons
👍 Pros
- Features a large 55-inch 4K Ultra HD display, delivering sharp picture clarity and immersive viewing experiences.
- Supports Dolby Vision High Dynamic Range (HDR), providing enhanced contrast, vibrant colors, and detailed visuals for lifelike images.
- Integrates Roku TV smart functionality, offering seamless access to thousands of streaming channels and a vast library of content.
- Includes a dedicated game mode and an amazingly low input lag, making it highly suitable for responsive gaming experiences.
- Comes with a variety of input options including three HDMI 2.0 ports (one with ARC), USB 2.0, Ethernet, and composite video.
👎 Cons
- This is a 2018 model (55S517), which means it may lack some of the latest display technologies or smart TV features found in newer televisions.
- Explicitly states that "Contrast Control Zones is not included in 5 Series," meaning it may not achieve the same localized contrast performance as higher-end TVs.
- Only includes one USB 2.0 port, which may be limiting for users who wish to connect multiple external storage devices or peripherals simultaneously.
- The provided remote control is a standard Roku TV RC580, which might lack advanced features like voice control or private listening often found with premium remotes.
- While supporting Dolby Vision, the overall brightness capabilities for HDR are not specified, which can impact the full effect of HDR content.
Frequently Asked Questions
What is the screen size and resolution of the TCL 55S517 TV?
The TCL 55S517 features a large 55-inch diagonal screen with stunning 4K Ultra HD picture clarity.
Does this TV support high dynamic range content?
Yes, this TV pairs 4K Ultra HD clarity with the contrast, color, and detail of Dolby Vision high dynamic range (HDR).
What smart TV platform is integrated into this model?
The TV features Roku TV smart functionality, providing access to thousands of streaming channels and a vast library of content.
Is this television a good choice for gaming?
Yes, it includes a dedicated game mode and boasts an amazingly low input lag, making it well-suited for gaming.
How many HDMI ports are available on the TCL 55S517?
The TV provides three HDMI 2.0 inputs, one of which supports Audio Return Channel (ARC) functionality.
Does this TV have Contrast Control Zones for improved picture?
No, the features explicitly state that "Contrast Control Zones is not included in 5 Series" for this model.
What year was this TCL TV model released?
This TCL 55S517 is identified as a 2018 Model in the product description.
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