Skip to main content

Sony KDL-40NX713 review

The Sony KDL-40NX713 is a well priced LCD that works very well indeed Tested at £1020

5 Star Rating

Our Verdict

A fine mix of features and value; not a world-beater, but a consistent, appealing TV


  • Excellent picture
  • fine sound
  • elegant styling
  • comprehensive spec;decent value


  • 3D transmitter and specs will cost you extra
  • very little else

Sony’s KDL-40NX713 sits on the cusp of old and new: while it’s nominally a 2011-series television, facets of its design cling to 2010-era Sony principles.

For example, and unlike other new-generation 3D-capable Sonys, the NX713 still requires the purchase of a 3D transmitter dongle and glasses, adding at least £150 to its price. That aside, the Sony is well priced – we’ve seen it for £900 at some retailers – and its performance is exemplary.

Impressive online abilities
As an NX-series model, it’s ideally suited to the impressive array of online content offered by Sony’s Bravia Internet Video service, its integrated wi-fi sparing you the expense of additional USB dongles.

It’s an LED-backlit set too, although it uses edge-lit technology, rather than the superior full-array system found on pricier sets. As with most recent Sonys, it also includes an excellent digital tuner, making the 40NX713 a terrific choice for day-to-day television watching.

Standard-definition pictures are crisply defined and noiseless, a reflection of the Sony’s efficient Bravia Engine 3 scaling and image enhancement, while Freeview HD is better still. Colour consistency is first-rate, solid blocks of background are stable and edge-definition is as remarkable as it ought to be.

Predictably, it’s Blu-ray that most flatters the Sony. Motion is entirely stable, even with the steady horizontal camera pans that can frequently give rival sets palpitations.

Colours are properly saturated without being overblown, subtle details are unerringly highlighted and, if some dark areas recede into solid blocks of black rather than reveal their full array of textures, that’s probably par for the course at this price.

Heck, the Sony even sounds good, with a composed treble and a fullness of tone that entirely eludes many of its rivals.

Online and 3D? Online content varies in quality, of course, with the iPlayer and Sony’s Qriocity platforms giving the best results.

Shift to LoveFilm, and more pixellation becomes apparent with some older movies, but it’s never enough to intrude unduly. In our room, with our wireless router within sight of the set, the wi-fi streaming worked fine too.

Competent 3D performance
As for 3D – well, some crosstalk and stability issues can crop up from time to time, especially with faster-moving images, but as we’ve said before, at this stage it’s hard to discern whether it’s the set or the content at fault.

In general, and especially with a well-sorted Blu-ray disc such as Avatar or a good game such as Gran Turismo 5, the Sony’s engaging enough.

And that’s a sentiment that neatly summarises the KDL-40NX713 as a whole. It’s nothing revolutionary – in fact, in some senses, it’s old before its time.

But it works very well indeed, it’s good to look at and it’s not too expensive. And that’s enough to earn it our respect.

Follow on Twitter

Join on Facebook


View All

General Information

Product SeriesNX713
Product LineBRAVIA
Product NameSony KDL-40NX713
Product ModelKDL-40NX713
Manufacturer Website Address
Brand NameSony
Product TypeLED-LCD TV
ManufacturerSony Corporation
Manufacturer Part NumberKDL-40NX713


Total Number of HDMI Ports4

Physical Characteristics

Depth with Stand24.5 cm
Weight with Stand Approximate19.80 kg
Width with Stand94.4 cm
Weight Approximate16.10 kg
Height with Stand61.2 cm
Width94.4 cm
VESA Mount Standard300 x 300
Depth3.2 cm
Height58.2 cm
ColourBlack Pearl
Dimensions58.2 cm (H): 94.4 cm (W): 3.2 cm (D)

Technical Information

FeaturesSleep Timer
Streaming ServiceYouTube
Aspect Ratio16:9
3D Type3D Ready
Backlight TechnologyEdge LED
Internet AccessYes
PC StreamingYes
Electronic Program GuideYes
Screen Size101.6 cm (40")


RMS Output Power26 W
Sound SystemDolby Digital Plus

Energy and Performance

Standby Power Consumption200 mW
Maximum Resolution1920 x 1080
Operating Power Consumption142 W


Digital TunerDVB-C (MPEG4)
Video Signal StandardHDTV
Scan Format1080p
Standard Refresh Rate50 Hz

Network and Communication

Wireless LANYes


DLNA CertifiedYes
Package Contents
  • AC Cable
  • Operating Instructions
  • Table-Top Stand
  • Remote Commander


Limited Warranty5 Year