One of these common issues is the “ Unknown USB Device (Device Descriptor Request Failed) ” error that shows up in the Device Manager. It also sounds weedy in the mid-range, so dialogue lacks clarity.Windows 10 Home users have been reporting issues when connecting and using a USB device on their computer. The TV's not just lacking in bottom-end grunt. Instead, you're stuck with tiny drivers that produce tinny and weak audio. Unlike Panasonic, Toshiba hasn't made extra room in the slim chassis to add beefier speakers. On the whole, though, the picture quality is a step behind that of many competing TVs.

It's not all bad news, though, as the Resolution+ system does a decent job of sharpening up standard-definition TV channels and DVDs without adding in tonnes of picture noise. The panel's viewing angle is also quite tight - there's a noticeable loss of contrast if you're watching the set off centre. You either get one or the other, but not both at the same time. This TV just doesn't seem able to achieve a good balance between cranking out bright, vivacious colours, and handling more subtle hues. The colour palette doesn't seem to be as natural as it is on LED sets from Sony, Samsung and LG. Most manufactures now seem to have tackled this problem, but Toshiba isn't among them. This TV suffers from noticeable pooling of light around the edges of the display, a problem that manifests itself as grey circles when you're watching darker scenes. The LED backlight is the biggest problem. When it comes to picture quality, this TV suffers from some of the same issues that affected last year's LED tellies from Toshiba. There's also Toshiba's Resolution+ upscaling system for adding more sharpness to standard-definition material. It's home to Toshiba's Active Vision M100HD system, which includes 100Hz scanning alongside its picture-processing wizardry. This set isn't short of picture-processing features. We couldn't get this feature to work reliably, which perhaps isn't surprising given that the camera has quite a low resolution. You can also set it up to recognise different faces and switch between presets using facial recognition.

If they're not, it dims the brightness level to save energy. This is used to detect whether someone is watching the TV. One of the TV's neat features is its built-in camera.

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