Sony KDL22EX308, KDL32EX308 manual LCD Timing Control Failures

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Chapter 4 - Appendix

Figure 4-3 illustrates 2 examples of a loss of control data to the drive IC’s. In the ﬁrst example, an entire group of column drivers has lost the data stream for red. The second example involves the complete loss of drive data for all RGB information to the right side of the screen. This is sometimes caused by the ﬂat cable connecting the TCON to the LCD panel coming loose. The area of missing video can be dark or completely white depending on the panel design.

Service Tip: Select an inactive input (or one that is known to be a 4:3 SD

source) and toggle between the “normal” and “zoom” modes. If the lines

follow the zoom changes, the problem is located on the video process

board. If they stay in the same place, they are originating in the TCON or

LCD panel.

DEFECTIVE

TCON DATA

OUTPUT

DEFECTIVE

TCON OR LOOSE

TCON TO PANEL

CONNECTING

CABLE

FIGURE 4-3

LCD TIMING CONTROL FAILURES

CTV-68

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Contents Training Manual Table of Contents Introduction Overview FeaturesHdmi USB2.0 Side InputBravia Sync Advanced Contrast Enhancer ACEBAL Board Overall Circuit DescriptionSwitch Unit Power SupplyInverter HLR Board22EX308 Overall Block Diagram 32EX308 Overall Block Diagram Introduction Software UpdatesSoftware Update Responsibility Examples of Software Correctable SymptomsChecking the Software Version Troubleshooting No Video Video FailuresNo Video Video DistortionTroubleshooting Video Distortion Troubleshooting Flowchart Power Supply Troubleshooting Audio TroubleshootingWon’t Power On Completely Dead SetNo Power Troubleshooting Flowchart Protection Shutdown Protect Shutdown Troubleshooting Flowchart Backlight Issues Diagnostics HistoryNo Backlight, No Shutdown Test Points Circuit Board and Connector LocationsKDL22EX308 Test Points KDL32EX308 Test Points KDL22EX308 Board Locations KDL32BX300 Board Locations LCD Panel Basics Tcon Troubleshooting IntroductionAppendix Typical LCD Timing Control Diagnosing a Failed Tcon Gate DriversSource Drivers Typical LCD Panel Failures Tcon Failures Troubleshooting a Dead TconLCD Timing Control Failures Examples of Actual Tcon Failures Appendix LCD Panel Failures Appendix San Diego, CA

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.