Appliances Presidents’ Day SaleEnds 2/25. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product SearchGo to Footer
Main Content
product image

Toshiba - 55" Class (54.6" Diag.) - LED - 2160p - with Chromecast Built-in - 4K Ultra HD TV

Model: 55L621U
SKU: 4882400
This item is no longer available in new condition. See similar items below
  • Key Specs
    • Display Type: LED
    • Screen Size Class: 55 inches (The group size measurement of a screen. This differs from a screen size measured diagonally from corner to corner.)
    • High Dynamic Range (HDR): false (An HDR-compatible 4K TV or other HDR-compatible product displays HDR video content when it's available from sources like 4K Ultra HD Blu-ray Discs and 4K streaming services.)
    • Refresh Rate: 60Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
    • Motion Enhancement Technology: Motion Rate 60 (Proprietary technologies produced in addition to the Refresh Rate that smooth out faster moving pictures to reduce blur and pixelation.)
  • General
    • Brand: Toshiba
    • Model Number: 55L621U
    • Product Name: 55" Class (54.6" Diag.) - LED - 2160p - with Chromecast Built-in - 4K Ultra HD TV
    • Color: Black
    • Model Year: 2016
  • Dimensions
    • Product Height With Stand: 30.5 inches
    • Product Width: 49.1 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth With Stand: 9.7 inches
    • Product Height Without Stand: 28.7 inches
    • Product Depth Without Stand: 3.7 inches
    • Product Weight With Stand: 34.2 pounds
    • Product Weight Without Stand: 33.1 pounds
  • Display
    • Display Type: LED
    • Screen Size: 54.6 inches (Size of the screen, measured diagonally from corner to corner.)
    • Screen Size Class: 55 inches (The group size measurement of a screen. This differs from a screen size measured diagonally from corner to corner.)
    • High Dynamic Range (HDR): false (An HDR-compatible 4K TV or other HDR-compatible product displays HDR video content when it's available from sources like 4K Ultra HD Blu-ray Discs and 4K streaming services.)
    • Curved Screen: false
    • Refresh Rate: 60Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
    • Motion Enhancement Technology: Motion Rate 60 (Proprietary technologies produced in addition to the Refresh Rate that smooth out faster moving pictures to reduce blur and pixelation.)
    • Brightness: 350 nits (A measure of the total light output.)
    • Maximum Contrast Ratio (Native): 4000:1 (The difference between the brightest and the dimmest a screen panel can be. A higher contrast produces more in-depth images.)
    • Closed Captioning: true (The text version of spoken audio displayed on the screen. Devices that can display closed captioning typically have the option to toggle the feature on or off.)
    • Language(s) Displayed: English, French, Spanish (The available language options for displayed text or captions.)
  • Features
    • Remote Control Type: Standard
    • Smart Capable: true (Smart, or smart-capable devices are able to connect directly to your home network in order to stream content from the Internet, run Internet-based apps, or connect to other smart devices.)
    • Indoor Or Outdoor Use: Indoor (Indicates the appropriate environment product was designed to be used in.)
    • Text-To-Speech: true (A system that converts language text into speech.)
    • V-Chip: true (Feature that blocks television programming if it has a content rating outside of the acceptable rating(s) configured by the user.)
    • TV Tuner: Digital (The ATSC TV Tuner is a component built into conventional TV sets or other devices for receiving over-the-air broadcast TV without a cable/satellite box. Digital tuners may be purchased separately and connected to a device if it does not have one built in.)
  • Connectivity
    • HDBaseT Receiver: false (An input that receives uncompressed HDMI signals over a category cable point-to-point, up to 100 meters, from a transmitter.)
    • RF Antenna Input: true (This input is used to connect devices such as antennas or cable boxes to a TV via a coaxial cable.)
    • Number Of USB Port(s) (Total): 1 (The total number of USB ports including all generations and versions.)
    • Headphone Jack: true (The device features an interface that allows for the connection of headphones.)
  • Compatibility
    • VESA Wall Mount Standard: 400mm x 200mm (VESA wall mount standards refer to the spacing of screw holes built into a TV in order to fit with standard TV wall mounts. These standards are implemented into most TVs and monitors.)
  • Audio
    • Built-In Speakers: true
    • Surround Sound Supported: DTS Studio Sound (Surround sound systems use multiple audio channels and speakers to create an immersive sound experience for the listener. There are also various proprietary technologies that imitate this kind of sound via a device's built-in speakers or soundbar.)
    • Speaker Output: 24 watts
  • Power
    • ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
    • EPEAT Qualified: false (The Electronic Product Environmental Assessment Tool (EPEAT) was designed to provide an environmental assessment tool for purchasers. In order to qualify for EPEAT, a product must meet all 23 required criteria.)
    • Estimated Annual Operating Cost: 31 United States dollars (Predicted cost of operating the product under average conditions for one year.)
    • Estimated Annual Electricity Use: 258 kilowatt hours (Predicted amount of electricity needed to operate the product under average conditions for one year.)
    • Rechargeable Battery (Remote Control): false
    • Battery Size (Remote Control): AAA (The battery size required for operation.)
    • Number Of Batteries Required (Remote Control): 2
    • Number of Batteries Included (Remote Control): 2
  • Included
    • Stand Included: true
  • Box Dimension
    • Height: 33.07 inches
    • Width: 52.95 inches
    • Depth: 6.42 inches
    • CubicDimension: 11242 inches
  • Other
    • UPC: 600603198809

Go bigger with this Toshiba 55-inch 4K LED TV. This large TV means you can comfortably sit on your sofa and see every last piece of the action, and 4K resolutions give you more detail than ever before. Connect this Toshiba 55-inch 4K LED TV to your network to enjoy streaming media without fuss.

4K Ultra HD TV Buying Guide

  • 54.6" screen (measured diagonally from corner to corner): Large enough to provide an immersive experience for everyone in the room.
  • Chromecast Built-in: In order to cast your favorite shows, movies, music and more, you must download the Google Cast app and use your compatible mobile device along with cast-enabled apps to send content right to your TV.
  • Works with Google Home powered by the Google Assistant: Stream your favorite entertainment using just your voice. Turn up the volume, play your favorite show, or stop the music - all without having to raise a finger.
  • LED TVs perform well in all lighting conditions: They also deliver plasma-like deep blacks and rich colors.
  • 2160p resolution for breathtaking HD images: Watch 4K movies and TV shows at 4x the resolution of Full HD, and upscale your current HD content to gorgeous, Ultra HD-level picture quality.
  • Wireless Connectivity: Provides fast and reliable streaming with Wi-Fi.
  • Advanced TV sound: Two 12W main channel speakers, DTS Studio Sound.
  • 3 HDMI inputs for the best home theater connection: High-speed HDMI delivers up to 2160p picture and digital surround sound in one convenient cable. HDMI cable not included.
  • Enjoy the picture from multiple angles: 178° horizontal and vertical viewing angles provide a clear picture for viewers seated near the side of the screen.
  • Manage the viewing experience for your kids: The built-in V-chip lets you block content based on program ratings and check ratings of unfamiliar programs.
  • Enjoy a crisp, detailed picture: The 350 cd/m² brightness and 6 ms response time promote sharp, highly visible images.
  • 1 USB input: Easily connects your digital camera, camcorder or other USB device.
Whats Included
  • 2 AAA batteries
  • Remote control
  • Stand
  • Toshiba 55" Class (54.6" Diag.) - LED - 2160p - with Chromecast Built-in - 4K Ultra HD TV

Q: what is the refresh rate

A: I checked around the site and found this link: http://www.bestbuy.ca/en-CA/product/toshiba-toshiba-55-4k-uhd-led-smart-tv-55l621u-only-at-best-buy-55l621u/10405321.aspx. According to this, the refresh rate is 60Hz.

Q: When the tv comes on it goes directly to the Chromecast set up screen. How can you get rid of the set up screen and have the tv default to the satellite?

A: I had the same issue, I can't believe more people are not complaining about it. I see no way around it, you have to setup Chromecast even if you are not going to use it. Once I set it up the TV turned on to the input that was set when shut off......

Q: Is this a smart tv?

A: Best Buy is very upfront. Only "Smart Features" are through googlecast. It lacks many of the attributes of the more expensive models.

Q: What are the reviews for playing video games on this TV?

A: There are some important things to know for both lag and PC connections with this TV - I have it and I work in the industry and will say this TV is one of the ABSOLUTE BEST DEALS available... but only if you know enough to enable them. So, first off, the simple one - want the lag gone? Set the TV mode to "PC." Also, on some firmwares, it will be much easier/better to set it to "Mode 2" (in the other menu options - not the display options.. it might be called HDMI mode 2, I forget...) Anyway, so the thing about this tv is that it actually supports 4k60 4:4:4 from a PC. What this means is that it will look every bit as sharp as a monitor does, providing your TV can output the right resolution. HOWEVER, the caveat is that you will need to force an EDID from your computer to the TV. Most people don't even know what an EDID is, but basically it is a file on every display that you connect that says "Hey, these are my available resolutions." In those resolutions is an option (at least from my Nvidia card) to run in RGB mode. This is IMPORTANT. Running in RGB will give you a 1:1 pixel mapping at 4k with 60hz refresh rate. If you try and do this in standard hdmi/non-rgb mode, you're going to be limited to 30hz, which is garbage. Now, I did have this enabled without forcing the EDID at one point, but then I setup Chromecase/connected ti wi-fi and the Television did a firmware update, which removed the RGB option... So, what to do? You gotta find an EDID (HDFury's site has plenty) that supports all resolutions. Then, you need to use CRU (Custom Resolution Utility, or something like that - it's free) to force that EDID to the video card. Reboot, and then you will be able to choose 2160px60hz, AND RGB mode. If you haven't seen the difference between this and the garbage 4:2:2 2160p mode, you will DEFINITELY be shocked at how great this TV can look. Also, turn your sharpness setting all the way down - that's a given on almost any TV, as the sharpness setting is merely post-processing that ruins your source image. Anyway, I'm not going into more detail than this.. but I will say that once you force the EDID, many resolutions will be availablie and you should NOT try any other ones that you don't know are supported, as they can mess up the TV. You've been warned. For those that follow this, you will be rewarded with a 2160p monitor @ 60hz that looks every bit as good as one costing 5 times the price.

Q: My tv will turn on when plugged in, but after 10 seconds, after the Toshiba startup screen it just turns off and wont turn back on unless unplugged then replugged, only to do what i just stated again.

A: I replaced everything! All cables and All boards! Same thing! Do not buy any parts. Does the same splash screen and goes back off. Been to a lot of sites where nobody was able to fix it. I think it was a Chrome cast update that bricked the TV. Lot of user from 11/19 to 4/15/20 have the same issues. With the cost of power board or main board lots of people have just bought a new TV. I paid $100 for ALL the components from a broken screen 55L621U. Tested each component as I switched them out (even pwr/imput button, wifi, 3 boards, and all wires) to no avail. Power on splash screen the black screen and power off. No support on this one. Best Buy 389 for a new one.

Q: Why won't this tv go into the 4k 2160 resolution with anything? It has been 1080p with everything I've tried (watching tv, chromecast off of a computer and phone, and movies from a ps4). I even bought a 4k hdmi cord. Any ideas why it won't go 2160?

A: Everything you tried is not compatible with 4K resolution. Most television providers don't support 4K. The version of Chromecast that is built into the TV also doesn't support 4K. The PS4 and PS4 Slim have a maximum resolution of 1080p, so the 4K HDMI cord won't "make" the PS4's resolution 4K. Some 4K-compatible products include Roku 4, a 4K Blu-Ray player, a PS4 Pro, and an Xbox One S.

Q: does it have HDR

A: No, it does not support HDR.

Reviews