NT39538H-C12B9C with Scalar Strip Test Points
Hv550qub-b11 Side COF Data — In this article, we explain the side COF data of the HV550QUB-B11 LCD panel, where the NT39538H-C12B9C COF is used along with its connections to the scalar strip. The purpose of this guide is to help technicians understand the COF data of this panel and easily trace its signal connections during troubleshooting or panel repair. In this article, two separate images of the scalar strip are also included, showing the left and right side connections clearly. In addition, one complete image provides an overview of the entire COF together with the scalar strip, so all connection points can be seen and understood at a glance. This information can be helpful when tracing COF signals, line drive issues, or other screen-related faults in this panel.
Right Side Scalar Strip Test Points
In the image below, you can see the test points of the right side scalar strip. This visual clearly highlights each connection point, making it easier for technicians to trace signals and verify proper functionality during troubleshooting or repair.
Left Side Scalar Strip Test Points
In the image below, you can see the test points of the left side scalar strip. This illustration clearly shows each connection point, allowing technicians to easily trace signals and check for proper functionality during troubleshooting or repair.
Hv550qub-b11 Side COF Data NT39538H-C12B9C
In the image below, you can see the complete COF data of the NT39538H-C12B9C along with the HV550QUB-B11 panel. This visual provides an overview of all connection points and the scalar strips, allowing technicians to easily reference the panel and COF for troubleshooting, signal tracing, or verification during repair.
NT39538H-C12B9C Test Point Description
1: VGH 31V
Provides the main gate high voltage (VGH) for the LCD panel, essential for proper pixel driving. If this voltage is missing or unstable, the display may show no image or horizontal lines.
2: VGL 7.8V
Provides the main gate low voltage (VGL) for the LCD panel, which is crucial for proper pixel switching. If this voltage is missing or unstable, the display may show inverted lines, dark bands, or abnormal contrast.
3: VDD 3.3V
Supplies the digital power (VDD) to the COF, ensuring proper operation of internal circuits and logic. If this voltage is missing or unstable, the panel may fail to display an image or may show distorted graphics.
4: GND
Provides the ground reference for the COF and LCD panel circuits, completing the electrical path for all signals and voltages. If this connection is missing or unstable, the display may not function properly, showing no image or erratic behavior.
5: GND +0.054V
This test point provides a slightly elevated ground reference used for certain signal calibrations within the COF. If this voltage is missing or unstable, the display may show minor flickering, signal inconsistencies, or irregular pixel behavior.
6: STV1 +0.064V
This test point provides the first source driver voltage (STV1) required for proper pixel addressing. If this voltage is missing or unstable, the display may show horizontal lines, flickering, or incomplete image rendering.
7: CPV +1.4V
This test point provides the common power voltage (CPV) for the COF, which helps maintain stable operation of the display circuits. If this voltage is missing or unstable, the panel may exhibit flickering, uneven brightness, or distorted images.
8: OE1 0.69V
This test point provides the first output enable voltage (OE1) for the COF, controlling the timing of pixel activation. If this voltage is missing or unstable, the display may show missing lines, incorrect pixel updates, or partial image rendering.
9: XAO +3V
This test point provides the X-axis oscillator voltage (XAO) for the COF, essential for proper timing and signal generation. If this voltage is missing or unstable, the display may show flickering, distorted images, or synchronization issues.
10: LUDL1 +3.27V
This test point provides the first upper/lower data line voltage (LUDL1) for the COF, crucial for proper pixel data transmission. If this voltage is missing or unstable, the display may show missing lines, flickering, or uneven image rendering.
11: STV2 +0.06V
This test point provides the second source driver voltage (STV2) for proper pixel addressing in the COF. If this voltage is missing or unstable, the display may show horizontal lines, flickering, or incomplete image rendering.
12: VCOM +8.2V
This test point provides the common voltage (VCOM) for the LCD panel, stabilizing pixel voltage swings and ensuring uniform brightness and contrast. If this voltage is missing or unstable, the display may exhibit flickering, ghosting, or washed-out images.
HV550QUB-B11 55″ TFT‑LCD Panel
This is a 55-inch 4K (3840×2160) TFT-LCD panel manufactured by BOE. It features a wide viewing angle of approximately 89° in all directions, a contrast ratio of around 1200:1, and uses LVDS or V-by-One interface for signal input. The panel is intended for use in TVs and large display units and requires a separate backlight unit for operation.
Technical Advisory
This COF data has been published purely for technical purposes to assist working technicians. It is intended to provide clear guidance on the panel connections, test points, and troubleshooting procedures. Sony LED TV Repair Center will continue to share such detailed technical information to support technicians and ensure accurate and efficient repair work.
Conclusion
Hv550qub-b11 Side COF Data provides a complete reference for technicians to understand the COF connections and scalar strip test points of the NT39538H-C12B9C panel. By following the details in this guide, including the left and right scalar strip test points and the full COF overview, technicians can accurately trace signals, verify voltages, and troubleshoot display issues efficiently. This information ensures proper maintenance and reduces the risk of errors during panel repair.
Related Articles
If you want to view a different version of the NT39538H-C12B9C COF DATA 2, this article provides the perfect reference. It includes detailed information on the panel’s COF data, connections, and test points, making it easier and clearer for technicians to work efficiently.
If you are looking for detailed pin information for the NT39538H-C12B9C COF DATA Pin Details, this article is the ideal guide. It covers all test points, voltages, and connections, providing technicians with clear and practical reference for troubleshooting and repair.
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Shaukat Ali has over 30 years of experience in LED TV repair, specializing in chip-level repair work. He is an expert in Sony LED TVs, and also repairs other major brands like Samsung, TCL, Orient, and Haier. His expertise includes display panel faults, motherboard issues, power supply circuits, T-Con, and HDMI faults. Based in Lahore, he shares real-time fault finding cases from daily repair work to help technicians and learners with practical experience.
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