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VIZIO E420I B0 Review

It seems the time has arrived – the era of the Smart Television. Now, normally I don’t like my electronics to be smarter than I am. But I must bow-down before the technology and inventiveness that has spawned this relatively-new (2014) area of consumer televisions.

There are two main types of high definition TV’s; 1080i (the i is for interlaced) and 720p (p for progressive). 1080i offers the most pixels, while 720p has fewer pixels. However, the difference is made up with the frame rate, which is only 30 frames per second with 1080i, but is double that with 720p, at 60 frames per second. The total pixels displayed per second is actually very similar, with 720p offering 55 million pixels per second, while 1080 is slightly higher at 62 million pixels per second.

What does that all that mean? It sort of depends on the type of TV/media content you watch. 720p is better at showing pictures with plenty of motion, since the higher frame rate helps smooth any quick motion on the screen – this is better for sports or action movies. 1080i offers more detail, which is for movies with lots of images or panoramas.

But best of all is the 1080p option, which is the option available with the Vizio E420I B0 model . It offers the best of both worlds, 60 frames per second, and the total bandwidth is 124 million pixels per second, double that of 1080i. It can display any HDTV signal without down-converting. 720p signals are up-converted, while 1080i signals only require some gently “de-interlacing” to work properly. 1080p is definitely the preferred option -it is backwards compatible with all old formats, and is ready for upcoming high definition discs.

Other features

Full-Array LED Smart TV with an ultra-narrow 10mm frame Crystal-clear LED-lit picture, and a faster, easier-to-use Smart TV experience

With built-in Wi-Fi included, this Vizio model connects to the latest movies, TV shows, and music from premium apps like Netflix, Amazon, Instant Video, VUDU, Hulu Plus, YouTube, Pandora and more, which come pre-installed.

Not only smart , this TV is packed with the latest technology, like a Full-Array LED for superior light uniformity, and Active LED Zones x6 for deeper black levels with a superior 2 million to 1 contrast.
Full HD 1080p and 120Hz effective refresh rate makes it perfect for sports and fast action scenes.

Average Rating: Out of nearly 2,000 individual reviews, the E420I-B0 rates an average of 3.8 out of five stars.

But there are a few other things to note – One of the downfalls of this product is it has no headphone jack; you must choose one of the other options: an HDMI output, an optical/SPDIF output, or R/L Analog RCA outputs. More than a few reviewers noted an odd “clicking” sound coming from the power supply when the TV was turned off, approximately 10 clicks per second.

The exact same complaint with the Vizio to need to manage only mistake here E420I B0 42 inch HDTV.

The clicking does stop as soon as the television is turned on. There also seems to be an occasional annoying buzzing noise that comes from the back center of the television when it is turned on, which appears to be linked to the backlighting intensity. This noise does go away with adjustments of the backlighting option. Another concern from some consumers, was that, while this model came with plenty of apps pre-loaded, it seems one is not able to load new apps to the television.


As its 3.9 star review would suggest, the Vizio E420I B0 42-Inch Smart TV is a decent buy for the money, it does seem to have its fair share of annoying bugs, but the reviewers who did rate it five stars were extremely pleased with their purchase. If you have or are about to purchase this model, let us know through the comments what your thoughts are on its performance. We welcome your input!

Brand Name: VIZIO
Model Number: E420i-B0
Display Size: 42.02 Inches
Display Technology: LED
Resolution: 1920×1080
Refresh Rate: 120 Hz
Dynamic Contrast Ratio: 2 million to 1
Image Aspect Ratio: 16:9
Dimensions: 37.70″ W x 23.89″ H x 7.46″ D
Weight: 17.18 lbs.



The VIZIO E420I B0 is a new, 1080p 42-inch LED unit that is quite a technological dream come true. One of the most important things about the television is the 1080p feature.

Picture Quality
User Interface
Sound Quality
Smart Features