Hello! Please accept warm greetings from M.A. Mustafa of Ornate Pixels. If you are working on a modern LED TV and dealing with a blank screen, dual-image ghosting, or abnormal display behavior, the root cause often traces back to the T-Con board and its core processing chips. Among them, the CS602-AOG IC (frequently searched for its datasheet, pinout, and equivalent alternatives) plays a critical role in managing gate-driver signals and power distribution.
In practical workbench troubleshooting, missing output voltages or distorted CKV and CLK clock signals from this IC are common culprits behind stubborn panel faults. In this comprehensive guide, drawing on nearly four decades of hands-on electronics repair experience, we break down the CS602-AOG IC pinout and voltage details, analyze signal-failure symptoms, and walk through field-tested procedures to identify and cut or block shorted CKV tracks to restore your TV panel.
CS602-AOG IC Application, Common Display Faults & CKV Troubleshooting Guide
The CS602-AOG IC (manufactured by CSOT / Chipone) is widely utilized across various modern LED and 4K UHD Smart TVs. It is predominantly integrated into panels manufactured by CSOT (China Star Optoelectronics Technology) and BOE, and is commonly found in popular global TV brands such as Samsung, TCL, Xiaomi (Mi/Redmi), Realme, OnePlus, Hisense, Haier, and Skyworth (typically across 32-inch to 55-inch display panels).
When working on these specified TV models and panels, if you encounter screen issues like vertical bars, line errors, ghosting, double imaging, or flickering, the root cause often points to internal gate-line failures (ODD or EVEN lines) within the panel. To repair these faults and restore a crystal-clear picture, you need to understand the clock signals: pins 31 to 42 of the CS602-AOG IC represent CLK1 to CLK12 (commonly known as CKV signals).
These 12 tracks are directly connected from the IC to the panel glass. Depending on the specific TV and panel design, these tracks may route through COF ribbon cables or connect directly to the panel traces. For ribbon cable connections, you can successfully isolate the faulty lines by blocking the specific CLK/CKV connections using insulation tape. Alternatively, if the connections are direct on the panel, the tracks must be very carefully cut or the corresponding 12 jumper connections disconnected to bypass the short circuit and bring the display back to life.
CS602-AOG IC Pinout Diagram And Voltage Details
The CS602-AOG is a high-performance integrated circuit widely used in modern LED TV T-Con (Timing Controller) boards for power management and signal processing. Below is the complete pinout diagram and detailed voltage reference guide to help electronics technicians accurately diagnose, troubleshoot, and repair panel faults.
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| Figure: Complete Pinout Diagram of CS602-AOG IC used in LED TV T-Con boards for troubleshooting CKV signals and voltage faults. |
Side 1: Pins 1 to 17
| Pin # | Pin Name / Function | Typical Voltage |
|---|---|---|
| 1 | VIN12 (Power Input 12V) | 12.0V |
| 2 | DLYB2 (Delay Control 2) | 0V - 3.3V |
| 3 | LX2 (Inductor Switch Node 2) | Variable |
| 4 | EN (Enable Control) | 3.3V |
| 5 | LX3 (Inductor Switch Node 3) | Variable |
| 6 | DLYB3 (Delay Control 3) | 0V - 3.3V |
| 7 | VIN3 (Power Input 3V3) | 3.3V |
| 8 | VINGL (Gate Low Voltage Input) | -5.0V |
| 9 | N-CS (Chip Select Negative) | 3.3V |
| 10 | VGL-GATE (Gate Low Driver Supply) | -7.0V |
| 11 | NC (No Connection) | Open |
| 12 | VGL (Gate Low Voltage Output) | -7.0V |
| 13 | GND (Ground) | 0V |
| 14 | VL (Logic Low Voltage) | 1.8V |
| 15 | SCL (Serial Clock Line) | 3.3V |
| 16 | SDA (Serial Data Line) | 3.3V |
| 17 | VDD (Digital Core Supply) | 3.3V |
Side 2: Pins 18 to 44
| Pin # | Pin Name / Function | Typical Voltage |
|---|---|---|
| 18 | STV1 (Start Vertical Pulse 1) | 0V / 3.3V |
| 19 | STV2 (Start Vertical Pulse 2) | 0V / 3.3V |
| 20 | LC (Level Control Signal) | Variable |
| 21 | CLK1 (Clock Signal 1) | Variable |
| 22 | CLK2 (Clock Signal 2) | Variable |
| 23 | GND (Ground) | 0V |
| 24 | VSS1 (Negative Supply 1) | -5.0V |
| 25 | VSS1-0 (VSS1 Ground Return) | 0V |
| 26 | VSS2-0 (VSS2 Ground Return) | 0V |
| 27 | VSS-2 (Negative Supply 2) | -10.0V |
| 28 | VGLLS-IN (Level Shifter Gate Low Input) | -7.0V |
| 29 | STV-OUT1 (Start Vertical Output 1) | Gate Pulse |
| 30 | STV-OUT2 (Start Vertical Output 2) | Gate Pulse |
| 31 | CLK-OUT1 (CKV/Clock Output 1) | AC Pulse |
| 32 | CLK-OUT2 (CKV/Clock Output 2) | AC Pulse |
| 33 | CLK-OUT3 (CKV/Clock Output 3) | AC Pulse |
| 34 | CLK-OUT4 (CKV/Clock Output 4) | AC Pulse |
| 35 | CLK-OUT5 (CKV/Clock Output 5) | AC Pulse |
| 36 | CLK-OUT6 (CKV/Clock Output 6) | AC Pulse |
| 37 | CLK-OUT7 (CKV/Clock Output 7) | AC Pulse |
| 38 | CLK-OUT8 (CKV/Clock Output 8) | AC Pulse |
| 39 | CLK-OUT9 (CKV/Clock Output 9) | AC Pulse |
| 40 | CLK-OUT10 (CKV/Clock Output 10) | AC Pulse |
| 41 | CLK-OUT11 (CKV/Clock Output 11) | AC Pulse |
| 42 | CLK-OUT12 (CKV/Clock Output 12) | AC Pulse |
| 43 | LC-OUT1 (Level Control Output 1) | AC Pulse |
| 44 | LC-OUT2 (Level Control Output 2) | AC Pulse |
Side 3: Pins 45 to 61
| Pin # | Pin Name / Function | Typical Voltage |
|---|---|---|
| 45 | DC-VGH (DC Gate High Voltage) | 28.0V |
| 46 | VGH-LSIN (VGH Level Shifter Input) | 28.0V |
| 47 | VGH (Gate High Voltage Output) | 28.0V |
| 48 | GND (Ground) | 0V |
| 49 | P-CS (Power Chip Select) | 3.3V |
| 50 | VGH-GATE (Gate High Driver Supply) | 28.0V |
| 51 | GND (Ground) | 0V |
| 52 | AVDD-GATE (Analog Power Gate Supply) | 15.0V |
| 53 | BANGSEL (Bank Select Control) | 0V / 3.3V |
| 54 | COMPA (Comparator Analog Node) | Variable |
| 55 | A-CS (Analog Chip Select) | 3.3V |
| 56 | GD I (Gate Driver Input Control) | Variable |
| 57 | GD (Gate Driver Output) | Variable |
| 58 | AVDD (Analog Supply Voltage) | 15.0V |
| 59 | GND (Ground) | 0V |
| 60 | LXH (High Voltage Switch Node) | Variable |
| 61 | HAVDD (High Analog Supply Voltage) | 16.0V |
Side 4: Pins 62 to 88 & Exposed Pad (89)
| Pin # | Pin Name / Function | Typical Voltage |
|---|---|---|
| 62 | AGND (Analog Ground) | 0V |
| 63 | GMA14 (Gamma Reference 14) | 14.8V |
| 64 | GMA13 (Gamma Reference 13) | 13.5V |
| 65 | GMA12 (Gamma Reference 12) | 11.2V |
| 66 | GMA11 (Gamma Reference 11) | 9.8V |
| 67 | GMA10 (Gamma Reference 10) | 8.5V |
| 68 | GMA9 (Gamma Reference 9) | 7.6V |
| 69 | GMA8 (Gamma Reference 8) | 6.9V |
| 70 | GMA7 (Gamma Reference 7) | 6.1V |
| 71 | GMA6 (Gamma Reference 6) | 5.4V |
| 72 | GMA5 (Gamma Reference 5) | 4.5V |
| 73 | GMA4 (Gamma Reference 4) | 3.2V |
| 74 | GMA3 (Gamma Reference 3) | 2.1V |
| 75 | GMA2 (Gamma Reference 2) | 1.2V |
| 76 | GMA1 (Gamma Reference 1) | 0.2V |
| 77 | SUPG (Supply Ground / Power Guard) | 0V |
| 78 | VCOM1 (Common Voltage Output 1) | 6.5V |
| 79 | VCOM1-FB (VCOM 1 Feedback) | 6.5V |
| 80 | VCOM2 (Common Voltage Output 2) | 6.5V |
| 81 | VCOM2-FB (VCOM 2 Feedback) | 6.5V |
| 82 | GND (Ground) | 0V |
| 83 | FBB3 (Feedback Branch 3) | 1.2V |
| 84 | FBB2 (Feedback Branch 2) | 1.2V |
| 85 | FBB1 (Feedback Branch 1) | 1.2V |
| 86 | NTC (Thermal Sensor Pin) | 1.0V - 2.5V |
| 87 | GND (Ground) | 0V |
| 88 | LX1 (Inductor Switch Node 1) | Variable |
| 89 | Exposed Pad (Thermal GND) | 0V (Soldered) |
Note: Voltages mentioned are typical operational values for active display panels and may slightly vary depending on specific TV panel models and manufacturer designs.
CS602-AOG IC Gamma Section: Troubleshooting Low Contrast and High Brightness Faults
In addition to gate driver signals, the CS602-AOG IC plays a vital role in processing the reference voltages for the display panel's grayscale performance. Specifically, pins 63 to 76 of the IC correspond to GMA14 down to GMA1 (Gamma 14 to Gamma 1), as clearly indicated in our pinout diagram and voltage reference table. These gamma voltages are essential for establishing the precise contrast, color graduation, and brightness levels of the picture.
When working on workbench repairs, if you measure abnormal voltages across these gamma pins or notice persistent panel symptoms like a washed-out picture, low contrast, or overly high brightness with faded colors, the gamma correction circuit requires careful diagnostic attention. To gain a deeper understanding of how these reference voltages operate, influence display gradation, and how to troubleshoot related panel defects step-by-step, you can check out our detailed guide on the LED TV Gamma Section Working Principle and Repair Guide.
Frequently Asked Questions (FAQ)
Where can I find the CS602-AOG IC datasheet PDF and pinout details?
Instead of searching for a scattered CS602-AOG IC datasheet PDF, this comprehensive workbench guide provides complete pinout specifications, voltage charts, CKV troubleshooting, and gamma correction details all in one place for professional technicians.
How do I fix vertical lines or flickering on a CS602-AOG panel?
Vertical lines, ghosting, or flickering issues caused by internal gate-line failures can be repaired by isolating pins 31 to 42 (CLK1 to CLK12 / CKV signals). This is done either by blocking the traces using insulation tape on the ribbon cable or by carefully cutting the corresponding tracks on the panel.
What causes low contrast or high brightness in these panels?
Low contrast, washed-out pictures, or overly high brightness are typically linked to abnormal voltages in the gamma reference section. Pins 63 to 76 (GMA14 to GMA1) of the CS602-AOG IC must be checked and measured to restore correct grayscale performance.
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