High-definition TVs currently fall into three categories: Full HD/FHD, otherwise known as 1080p, which has 1,920 x 1,080 pixels on the screen; Ultra HD/UHD, more commonly referred to as 4K (3,840 x 2,160 pixels); and the highest of them all, 8K (7,680 x 4,320 pixels). These days, only the cheapest (and often the smallest) TVs utilise an FHD/1080p resolution. The Samsung QN90C is available in a wide range of sizes from 43 through to 85-inches, with the lower end bringing it to our list of the best smaller TVs. Its solid reflection handling and brightness makes it a good choice for lots of purposes and lots of rooms. We find that's often what most people want from a smaller TV: versatility.

The 43-inch AU7100 even proves a little more tolerant of wide viewing angles than most budget LCD TVs, wrapping up a picture performance that trades showiness and aggression for immersiveness and consistency in a way we wholeheartedly endorse. For those using digital antennas, you can change the location of the antenna to see if it improves the signal. Key specs – Screen sizes: 43in, 50in, 55in (tested) and 65in; Display type: VA-type LCD LED direct-lit; Resolution: 4K/UHD (3,840 x 2,160); HDR formats: HDR10, HLG, Dolby Vision; HDMI inputs: 3 x HDMI 2.0; Operating system: Roku TV Those gaming-specific features are complemented wonderfully well but exceptional SDR and HDR picture quality, impressive Dolby Atmos sound and the latest iteration of LG’s smart platform, webOS 22. The latter provides access to just about every streaming service imaginable and navigating the platform is a doddle using the Magic Remote. Models 50in and up benefit from LG’s evo panel technology, which increases brightness when compared with last year’s model. Sadly, the 42in and 48in options can’t take advantage of this due to the pixel density on their smaller panel, but they’re still more than bright enough to deliver stunning HDR performance. Essentially, the higher the dynamic range (brightness and colours), the more lifelike the picture. HDR offers greater subtlety and depth of gradations of colours, plus stronger contrast.Key specs – Screen sizes: 65in, 75in (tested) and 85in; Display type: Neo QLED LCD; Resolution: 8K/UHD (7,680 x 4,320); HDR formats: HDR10, HLG, HDR10+; HDMI inputs: 4 x HDMI 2.1; Operating system: Tizen OS This question is pretty much moot now, as the vast majority of TVs are now 4K. It's actually rather hard to find Full HD (1080p) models, even at relatively small sizes.

Every new TV receives Freeview, but the majority now include Freeview HD tuners, too. This is the easiest way to watch HD broadcasts because you can use your existing digital aerial without having to buy any additional equipment. English, Simplified Chinese, Traditional Chinese TW / HK, Thai, Vietnamese, Indonesian, French, Portuguese, Hindu , B.Melayu

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On the other hand, if the TV still turns on and off at random, try doing a reset to see if it fixes it.