Troubleshooting | Sony KDL22EX308, KDL32EX308 manual

Chapter 3 - Troubleshooting

TCON: Since the TCON allocates the RGB video information based on speciﬁc timing information, the distortions tend to be ﬁxed and usually appear as symmetrical patterns that occupy most (or a signiﬁcant portion) of the display. Some examples of TCON errors:

•No video

•Thin vertical lines spanning most or all of the display

•More that one column of wide vertical columns which may appear black or any color, or may contain distorted video.

•Multi-colored vertical line patterns with a repetitive pattern

Service Tip: Whenever vertical lines of distortion appear, select an inactive input or disconnect the antenna in the tuner mode. The idea is to not have a high-deﬁnition signal as the source. This allows the picture zoom functions to operate.

Change the zoom mode from the remote commander. If the lines follow the normal and zoom modes the problem resides on the BAL board. If the lines remain ﬁxed throughout the various zoom modes the TCON is at fault.

LCD Panel: Distortions originating from the LCD panel tend to be localized with the exception of horizontal line issues. A failure of a gate driver can cause a horizontal distortion with all video content below that point appearing distorted. Depending on which gate driver has failed the distortion may only cover a small area of the bottom of the screen or a large area of the screen if the driver failed near the top of the panel. With the exception of visible physical damage, listed below are some examples of LCD panel related distortions:

•Any single, thin vertical line (regardless of color)

•Any thin vertical lines isolated to a speciﬁc area of the screen

•A singe vertical column of lines of any color or containing distorted video

•Any ﬁxed horizontal lines

•Blotches of black or improperly colored areas

•Ghosting of images in which the entire image is repeated one or more times

A thorough understanding of how the video is processed throughout the chain of circuits all the way to the panel is important. A past article written for the Sony Newsletter describes, in detail, how this process works. A copy of the article is included in the appendix section of this training manual.

The troubleshooting ﬂowchart in Figure 3-3 will assist in isolating which component is causing the distortion.

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KDL22EX308, KDL32EX308 specifications

The Sony KDL22EX308 and KDL32EX308 televisions are part of Sony's Ex Series, renowned for delivering high-quality viewing experiences in compact screen sizes. Designed primarily for smaller spaces, such as bedrooms, kitchens, or dormitories, these models effectively boast an array of features that enhance their usability and performance.

One of the standout characteristics of both models is their LED backlighting technology, which ensures bright images and remarkable color accuracy. This technology also contributes to energy efficiency, making them eco-friendly choices for consumers. The KDL22EX308 comes with a 22-inch display, while the KDL32EX308 offers a larger 32-inch screen, appealing to users who need a bit more screen real estate without major compromises on space.

Both models support a 720p HD resolution, which provides crisp and clear images perfect for everyday viewing. They incorporate Sony’s Motionflow XR technology, which minimizes motion blur during fast-paced scenes, making them ideal for watching sports, action films, or playing video games. This feature enhances the overall viewing experience by ensuring that moving images remain smooth and fluid.

Connectivity also plays a significant role in the usability of the KDL22EX308 and KDL32EX308 televisions. They come equipped with multiple HDMI inputs that allow users to connect various devices such as gaming consoles, Blu-ray players, and streaming boxes with ease. Additionally, a USB port permits users to view photos and videos directly from a USB stick, adding to their versatility.

Furthermore, both models incorporate a built-in digital tuner, enabling access to free over-the-air HD broadcasts. This feature allows viewers to enjoy a variety of channels without the need for a cable subscription, making it a cost-effective entertainment solution.

Another significant aspect of these models is Sony's Clear Resolution Enhancer technology, which enhances image clarity by upscaling lower resolution content, thus delivering a more enjoyable viewing experience across various media.

In conclusion, the Sony KDL22EX308 and KDL32EX308 televisions combine advanced technologies and features within compact designs, making them excellent choices for anyone seeking high-quality visual performance in smaller spaces. Their efficient connectivity options, superior image quality, and energy-saving capabilities position them as modern and practical entertainment solutions.