The TCL S5400AK is a 40-inch Full HD LED smart TV aimed squarely at households that want modern streaming features without paying 4K money. With Android TV on board, HDR10 support and Dolby Atmos audio processing, it promises a surprisingly complete experience at a very modest price.
At around £150, it sits firmly in the budget end of the TV market, making it an appealing step up from a non-smart or ageing bedroom set. A 4.5 out of 5 user rating from hundreds of reviews suggests owners are largely very happy with what it offers for the money.
It’s not a high-end home cinema screen, but as a practical, easy-to-use TV for everyday telly, streaming and gaming, the spec sheet is stronger than you’d expect at this size and price point.
The TCL S5400AK is ideal if you’re after a secondary TV for a bedroom, kitchen or small living room. The 40-inch screen is big enough for comfortable boxset binges without overwhelming a compact space.
It suits buyers on a strict budget who still want a modern smart platform. Android TV gives you access to major streaming apps, built-in Chromecast for casting from your phone, and Google Assistant voice control, so you’re not missing out on the essentials.
First-time smart TV owners will appreciate the straightforward setup and simple, app-focused interface. There’s no complicated calibration or advanced picture menus to wade through – just plug in, connect to Wi‑Fi and start streaming.
If you’re a home cinema enthusiast who insists on 4K, ultra-deep blacks and advanced gaming features like VRR or 120Hz, this isn’t the right screen. But for everyday telly, children’s rooms, student flats or as an upgrade from an old HD-ready set, it’s a very sensible choice.
Full HD resolution on a 40-inch panel keeps pictures sharp for catch-up TV, streaming and Freeview HD, and HDR10/HLG support adds a welcome boost to colour and contrast when you watch compatible content.
Android TV is a real highlight at this price: you get access to apps via Google Play, built-in Chromecast for casting from phones and tablets, and voice control through Google Assistant, making it feel far more premium than many budget sets.
Dolby Audio processing, Dolby Digital Plus support and 2.0-channel 16W speakers give soundtracks decent clarity and punch for everyday viewing, especially helped by Adaptive Sound Control that automatically tweaks audio depending on what you’re watching.
Connectivity is solid for a smaller TV, with HDMI (including ARC/eARC), USB, optical audio out, headphone socket, Ethernet and Wi‑Fi, plus Bluetooth 5.0 for wireless headphones or speakers, so it slots neatly into most home setups.
The slim, thin-bezel design, relatively light build and 100x100mm VESA mount make it easy to place on a stand or wall, and the strong user rating suggests reliability and day-to-day usability are reassuringly good.
The screen tops out at Full HD with a 60Hz refresh rate, so you don’t get the extra sharpness and future-proofing of 4K, which some buyers may expect even at the budget end now.
Energy efficiency is only rated F, so running costs will be slightly higher than more frugal newer models, particularly if the TV is on for many hours a day.
The 16W stereo speakers are fine for casual viewing but lack the depth and impact film fans might want; pairing it with a soundbar via HDMI ARC or optical out is a sensible upgrade.
There’s only one USB port and a relatively basic HDMI 1.4 spec, and while there is a game mode, you don’t get gaming extras like variable refresh rate or ultra-low input lag figures, which keen console gamers may miss.
A one-year manufacturer’s warranty is standard but not generous; some rivals offer longer cover for peace of mind.
Living with the TCL S5400AK is refreshingly straightforward. The included stand is a simple two-leg design that keeps the TV stable, and its modest footprint fits neatly on most TV units. At just 90.5cm wide and 52.4cm tall without the stand, it doesn’t dominate a room, and the thin bezel keeps the focus on the picture.
Setup is guided and simple: connect power, attach an aerial or satellite feed if you use live broadcast channels, join your Wi‑Fi network and sign in with your Google account. Auto channel search makes tuning easy, and the electronic programme guide helps you browse what’s on without fuss.
Android TV’s app grid is intuitive even for less techy users. You can quickly jump between HDMI sources, terrestrial channels and streaming services, and built-in Chromecast means you can send videos, music or photos from a phone without extra dongles.
The remote is a conventional design with dedicated navigation keys and works with Google Assistant, so you can search for shows or open apps using your voice. Features like Sleep Timer and Ambient Mode make it handy in bedrooms, while Smart Split Screen lets you keep an eye on two things at once, such as a live match and a news feed.
Day to day, the TV proves easy to live with: micro dimming and automatic noise reduction subtly tidy up the image, and the slim profile and 100x100mm VESA mounting mean relocating or wall mounting is straightforward for most households.
Picture performance is strong for a budget 40-inch set. The Full HD 1920 x 1080 resolution keeps Freeview HD and streaming content looking clean and detailed, while the Direct-LED backlight and TCL’s IPQ 2.0 picture engine help maintain consistent brightness and colour across the screen. HDR10 and HLG support give compatible films and shows more pop, especially in bright highlights, though you shouldn’t expect the same punch as a high-end 4K HDR set.
Motion handling is based around a 60Hz panel with TCL’s Picture Performance Index rated at 700. For everyday TV, sports and console gaming at 60fps, this is perfectly acceptable and avoids most obvious blur, though very demanding gamers might notice the lack of advanced motion and gaming features.
Sound quality is respectable considering the slim chassis. The 16W stereo speakers are helped by Dolby Audio and Dolby Digital Plus decoding, along with Adaptive Sound Control. Dialogue stays clear and there’s enough volume for most small to medium rooms. For films or music, you can expand the sound easily with a soundbar or AV system using eARC over HDMI or the digital optical output.
On the smart side, the S5400AK is well equipped. Android TV (version 11) gives access to apps via Google Play, covering big names like Prime Video, YouTube and Twitch, plus plenty of niche services. Built-in Chromecast makes it simple to share content from Android devices and Chrome browsers, while Google Assistant integration allows for hands-free control and content searches when used with compatible devices.
Connectivity is practical rather than extravagant. You get HDMI inputs (including ARC/eARC support), a USB port for media playback, Ethernet and Wi‑Fi b/g/n for network access, a headphone jack for private listening, and Bluetooth 5.0 for pairing wireless headsets or speakers. HbbTV support means you can access interactive broadcast services where available, and the internal quad-core processor ensures menus and apps remain reasonably responsive for everyday use.
At around £150, the TCL S5400AK offers very strong value for a 40-inch smart TV. While it doesn’t deliver 4K resolution, it compensates with a feature set that’s unusually rich at this price: Android TV, Chromecast built-in, HDR10/HLG support, Dolby Audio, Bluetooth and voice control are all big ticks for budget-conscious buyers.
The slightly weaker F energy rating and basic onboard speakers are compromises, but they’re acceptable in a TV at this level, particularly one that can be easily paired with an external sound solution. For many households, the low purchase price will more than balance out the marginally higher running costs.
A 4.5-star user rating from a large number of owners backs up the sense that you’re getting a lot of TV for your money. If you’re shopping in the entry-level bracket and can happily live with Full HD and a 60Hz panel, the S5400AK stands out as a very cost-effective option.
The TCL S5400AK is a well-judged budget TV that gets the essentials right and adds a few pleasant surprises. Full HD resolution, HDR support and the IPQ 2.0 picture engine deliver a crisp, colourful image that’s more than good enough for everyday viewing and streaming on a 40-inch screen.
Android TV, Chromecast, Google Assistant and Dolby Audio give it a modern, connected feel that many similarly priced sets lack. Strong owner feedback suggests TCL has balanced performance, features and ease of use effectively, making it an excellent pick for bedrooms, smaller lounges, student homes or anyone upgrading from an older non-smart TV.
You do sacrifice 4K, top-tier gaming features and class-leading energy efficiency, and the speakers are bested by a decent soundbar. But judged in its price bracket, the S5400AK is a highly appealing all-rounder that delivers a genuinely smart, enjoyable big-screen experience without stretching your budget.
