[LCD TVs Teardown] Power Consumption Compared [Part 1]

Jun 8, 2009
Nikkei Electronics Teardown Squad
The two 32-inch LCD TVs we torn down. Sony's "KDL-32J5" (left) and Dynaconnective's "DY-32SDDB" (right).
The two 32-inch LCD TVs we torn down. Sony's "KDL-32J5" (left) and Dynaconnective's "DY-32SDDB" (right).
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The power consumption of the KDL-32J5 was 56.45W.
The power consumption of the KDL-32J5 was 56.45W.
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The DY-32SDDB showed a power consumption of 138.51W.
The DY-32SDDB showed a power consumption of 138.51W.
[Click to enlarge image]

Nikkei Electronics Teardown Squad decided to break down two types of LCD TVs. One is Sony Corp's 32-inch Bravia "KDL-32J5" featuring energy saving functions, and the other is Dynaconnective Co Ltd's 32-inch DVD player-equipped "DY-32SDDB," which attracted public attention with the price as low as ¥49,800 (approx US$517).

Bravia TV features much lower power consumption

Before tearing down the LCD TVs, we measured the power consumption of the Bravia TV, which Sony claims is an energy-saving model. According to the specifications of the TV, its power consumption is 84W when it is operated with the maximum screen luminance with an all-white signal and the maximum sound volume.

We measured the power consumption of the TV showing a terrestrial digital TV program in the "standard mode," considering the normal usage of a TV. Under this condition, the power consumption of the Bravia TV was 56.45W.

The power consumption of the Dynaconnective's TV, when measured under the same condition, was 138.51W, much higher than that of the Bravia TV.

Just as Sony claims, the power consumption of the Bravia TV seems low. In fact, it is much lower than the power consumptions of the company's previous products. For example, the first 32-inch Bravia TV released in October 2005 has a power consumption of 150W, and that of the 32-inch CRT TV launched in June 2000 is 220W.

To know what kind of efforts Sony made to reduce the power consumption, we examined the inside of the Bravia TV.

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