COF And Scaler Test Points Details GuideÂ
You will get a complete set of test points for the NT61303H-C52A2B COF DATA, along with the test points of the scalar strip of panel number V420HJ2-P01C4. In this article, we will present a high-definition viewport image in which you will be able to clearly see the complete data, including all test points of the side cuff and the scalar strip of the panel within a single PDF viewport. This article is part of our COF Database series, and Sony LED TV Repair Center Lahore is always here to help you.
NT61303H-C52A2B COF Voltage AnalysisÂ
- 1: + 26,3V
- 2: – 7.8V
- 3: VDD +3.3V
- 4: GND
- 5: STV +0.03V
- 6: CKV +1.8V
- 7: OE1 +1.1V
- 8: OE2 +1.1V
- U:UD +3.3V
- L: L/R +3.3V
- R: STVR + 0.04V
- V: VCOM + 7.6VÂ
Test Point Short DescriptionÂ
VGH +31V
This is the Gate. High voltage is used to turn TFT pixels ON. If it drops, you may see half a screen, a dim display, or vertical lines. If it rises too high, distortion and noise appear.
VGL -7.8V
This is the Gate. Low voltage that keeps pixels OFF. If it is not low enough, ghosting or double shadows appear. If too low (more negative), flickering and fine lines can show up.
VDD +3.3V
The main logic supply powers the COF IC. Low voltage can cause freezing, a dim screen, or no display. High voltage can overheat or damage the COF.
GND (Common Ground)
Reference ground for all signals. Poor grounding causes noise, flickering, or random lines on the panel.
STV +1.1V
Clock pulse for driving rows. Incorrect level causes flickering, double lines, or partial row activation issues.
OE1-1.1V
Output enable control. If wrong, pixel response becomes unstable, and parts of the image may look faded or delayed.
L/R +3.3V
Left/right shift control. Wrong value can flip the image, shift rows, or cause mirrored patterns.
STV +0.03V
(Second STV line) Another vertical start reference. If unstable, it leads to row misalignment or jumping lines.
U – UD +3.3V
This point provides 3.3V supply for the COF data line. If this voltage is faulty or drops, it can cause image corruption, flickering, or no display on the screen.
High Definition COF Data Viewport
Below you will see a high-definition viewport image of NT61303H-C52A2B COF DATA, which includes complete side COF test points along with scaler test points. With the help of this data, you can easily bypass voltage or signal issues. This information is published to help fellow technicians and is shared purely for educational purposes. For more detailed guides, you can read our other articles related to COF test points on the COF Database page.
Conclusion
In conclusion, this NT61303H-C52A2B COF DATA article provides a clear and complete reference for technicians who need accurate COF and scaler test point information. The high‑definition viewport and listed data are intended to make fault finding, voltage checking, and signal bypass work easier at the panel level. We hope this data will be useful in practical repair work. For more similar technical references, you can explore our COF Database series.
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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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