V500HJ1-PE8 C7 Panel Complete Test Point

NT61305H-C52A3A Datasheet – In this article, we are sharing important information about the V500HJ1-PE8 C7 panel. It includes the complete test points of the COF (Chip on Film) and the scaler strip, which can be very helpful for LED TV repair technicians. Below, you will find two clear images of the panel’s scaler strip, showing the left and right sides separately. In these images, the complete test points of the COF and scaler strip for both the left and right sides are clearly provided so that technicians can easily identify the points for checking and troubleshooting.

COF Function in LED TV Panel

Chip on Film (COF) is a very important component used in modern LED TV panels. It plays a key role in controlling and distributing both voltage and display signals inside the panel. The COF is mounted on a flexible film that is directly connected to the panel’s glass and the scaler strip. Its main function is to receive signals from the panel’s driver or scaler circuit and distribute them accurately to the thousands of tiny pixels on the screen.

At the same time, the COF also helps in voltage distribution, ensuring that the required voltages are properly supplied to different sections of the panel for stable operation. Because of this, the COF works as a bridge between the panel electronics and the display matrix. If the COF is damaged or not working correctly, it can cause problems such as vertical lines, half display, or no picture. That is why understanding the COF and its test points is very important for technicians and students who want to learn about LED TV panel repair and troubleshooting.

Right Side Scaler Strip Complete Test Points

The image below shows the complete test points of the right side scaler strip of the V500HJ1-PE8 C7 panel. These test points are essential for technicians to check the voltage and signal distribution across the panel accurately. By following the marked points in this image, you can identify and measure the signals at each critical section of the scaler strip, ensuring proper panel operation and troubleshooting any issues. The clearly labeled complete test points make it easier for both beginners and experienced technicians to perform accurate diagnostics without confusion.

Left Side Scaler Strip Complete Test Points

The image below displays the complete test points of the left side scaler strip of the V500HJ1-PE8 C7 panel. These test points are crucial for accurately checking the voltage and signal distribution on the left section of the panel. By using this image as a reference, technicians can easily locate and measure signals at every important point on the scaler strip, ensuring proper functionality and effective troubleshooting. The complete test points shown in the image make it simple for both students and professional technicians to understand and perform precise diagnostics.

NT61305H-C52A3A Full Image 

In the image below, you can see the complete data of the NT61305H-C52A3A Datasheet, including the scaler strip left and right test points as well as the COF test points. This comprehensive reference allows technicians and students to perform precise diagnostics and ensures that all critical signals and voltages are clearly identified for accurate panel repair.

Test Points of NT61305H-C52A3A Datasheet

1.VGH (26.8V)

The VGH voltage in the V500HJ1-PE8 C7 panel is responsible for controlling the gate driving of the TFT pixels in the LCD matrix. It provides the necessary high voltage to switch the thin-film transistors (TFTs) on, allowing the pixels to display the correct image. If the VGH voltage is missing or unstable, the affected area of the screen may show horizontal lines, blank sections, or a completely dark display, as the pixels will not turn on properly. Maintaining the correct 26.8V VGH is crucial for accurate image reproduction and smooth operation of the panel.

2.VGL (-7.8V)

The VGL voltage in the V500HJ1-PE8 C7 panel provides the negative gate drive for the TFT pixels in the LCD matrix. It ensures that the thin-film transistors (TFTs) turn off properly, which is essential for controlling the pixel states and maintaining accurate image contrast. If the VGL voltage is missing or incorrect, the screen may display white spots, ghosting, or uneven contrast, as some pixels will fail to turn off. Ensuring the correct -7.8V VGL is critical for stable panel operation and precise image display.

3.VDD (3.3V)

The VDD voltage in the V500HJ1-PE8 C7 panel is the main supply voltage for the logic circuits of the scaler and the TFT drivers. It powers essential control components that manage signal processing and overall panel operation. If the VDD voltage is missing or unstable, the panel may fail to initialize properly, resulting in no display, flickering, or complete black screen, because the logic circuits cannot function without this supply. Maintaining a stable 3.3V VDD is essential for the proper operation of the panel’s electronics and accurate signal processing.

4. GDN

The GDN in the V500HJ1-PE8 C7 panel is the ground reference for the TFT driver circuits. It provides a stable return path for all signals and voltages, ensuring proper operation of the gate and source lines. If the GDN connection is missing or unstable, the panel may exhibit flickering, incorrect grayscale, horizontal lines, or complete display failure, because the circuits cannot complete their electrical paths. Maintaining a solid GDN is essential for stable and reliable panel performance.

5. STV (0.02V)

The STV voltage in the V500HJ1-PE8 C7 panel serves as a reference voltage for the source driver circuits. It helps regulate the pixel driving signals and ensures stable voltage levels across the source lines of the panel. If the STV voltage is missing, too low, or unstable, the display may show flickering, uneven brightness, or distorted images, as the source drivers cannot operate properly without this reference. Maintaining a stable 0.02V STV is essential for consistent image quality and reliable panel performance.

6.CKV (+1.8V)

The CKV voltage in the V500HJ1-PE8 C7 panel is the clock signal voltage for the source driver circuits. It synchronizes the timing of data transfer from the scaler to the panel’s source lines, ensuring that pixel signals are applied at the correct moment. If the CKV voltage is missing or unstable, the screen may exhibit flickering, misaligned images, or horizontal tearing, because the source drivers will not receive proper timing signals. Maintaining a stable +1.8V CKV is crucial for accurate image rendering and smooth panel operation.

7.OE2 (+1.2V)

The OE2 voltage in the V500HJ1-PE8 C7 panel is the output enable signal for the source driver circuits. It controls when the pixel data from the source drivers is sent to the panel, effectively turning the pixel output on or off at the correct timing. If the OE2 voltage is missing, too low, or unstable, the display may show partial images, flickering, or missing lines, as the pixels will not be enabled properly. Maintaining a stable +1.2V OE2 is essential for accurate image display and proper functioning of the panel.

8.OE1 (+1.2V)

The OE1 voltage in the V500HJ1-PE8 C7 panel functions as the output enable signal for the gate driver circuits. It determines when the gate lines of the TFT pixels are activated, allowing the corresponding pixel rows to receive data from the source drivers. If the OE1 voltage is missing, too low, or unstable, the screen may display missing rows, flickering, or incomplete images, because the pixels will not be properly turned on. Maintaining a stable +1.2V OE1 is critical for correct pixel operation and smooth image rendering across the panel.

U/UD (+3.3V / 0V)

The U/UD voltage in the V500HJ1-PE8 C7 panel serves as the up/down control signal for the gate driver circuits. It determines the scanning direction of the gate lines, controlling whether the pixels are activated from top to bottom or bottom to top. If the U/UD signal is missing, unstable, or incorrect, the panel may show inverted images, flickering, or uneven display, as the gate drivers will not scan the pixel rows properly. Maintaining a stable +3.3V/0V U/UD signal is essential for correct image orientation and reliable panel operation.

L/LR (+3.3V / 0V)

The L/LR voltage in the V500HJ1-PE8 C7 panel acts as the left/right control signal for the gate driver circuits. It controls the horizontal scanning direction of the gate lines, determining whether the pixels are activated from left to right or right to left. If the L/LR signal is missing, unstable, or incorrect, the display may show flipped or mirrored images, horizontal misalignment, or flickering, as the gate drivers will not properly sequence the pixel rows. Maintaining a stable +3.3V/0V L/LR signal is crucial for correct image orientation and smooth operation of the panel.

R STVR (0.03V)

The R STVR voltage in the V500HJ1-PE8 C7 panel serves as the reference voltage for the right side source driver circuits. It helps regulate the timing and voltage levels of the source signals, ensuring that the right section of the panel receives stable and accurate pixel data. If the R STVR voltage is missing, too low, or unstable, the right side of the display may show flickering, uneven brightness, or distorted images, as the source drivers will not operate correctly. Maintaining a stable 0.03V R STVR is essential for proper image reproduction and consistent panel performance.

VCOM (+7.1V)

The VCOM voltage in the V500HJ1-PE8 C7 panel is the common electrode voltage for the LCD pixels. It provides a stable reference for the liquid crystal elements, ensuring proper alignment and contrast of the pixels. If the VCOM voltage is missing, too high, or too low, the display may exhibit dark or bright spots, uneven contrast, or flickering, as the pixels will not switch correctly. Maintaining a stable +7.1V VCOM is crucial for accurate image quality and uniform panel performance.

Sony LED TV Repair Center

We are publishing the detailed and complete data of the NT61305H-C52A3A Datasheet for the convenience of technicians and students. This information provides all the necessary test points and voltages for the V500HJ1-PE8 C7 panel, helping professionals and learners perform accurate diagnostics and repairs. For more articles on the same topic, click on this category to explore additional guides and resources.

Conclusion

In conclusion, the NT61305H-C52A3A Datasheet provides essential and complete information for anyone working with the V500HJ1-PE8 C7 panel. By understanding the test points, voltages, and the role of each signal, technicians and students can perform accurate repairs and troubleshooting with confidence. This datasheet serves as a reliable reference for maintaining panel performance and ensuring correct operation, making it a valuable resource for professionals and learners in the field of LED TV repair.

Related Articles

If you want to explore more articles on the same topic, you can also read our detailed guides on similar LED TV panels and components. These articles provide step-by-step explanations, complete test points, and voltage references to help technicians and students perform accurate diagnostics. For more information, check out this article: [HV550QUB-B11 Side COF Data].

Additionally, we have another article that covers advanced troubleshooting and repair tips for LED TV panels. It complements the NT61305H-C52A3A Datasheet and provides practical insights for both beginners and professionals. You can read it here: [NT61303H-C52A2B DATA SHEET].

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