The TP.MS6486T.PB753 is a versatile "three-in-one" (combo) LED TV motherboard produced by CVTE (Dream-Future). This board is commonly found in smart TVs from brands like Hisense (e.g., 32N2170, 43N2170PW), Lloyd, VU, Doffler, and DEXP. A schematic for this board is an essential roadmap for technicians troubleshooting power failures, display issues, or system crashes. Hardware Architecture and Key Components TP.MS6486T.PB753
integrates the main processor, power supply unit (PSU), and LED backlight driver into a single PCB.
Main Processor (SoC): It features the Mstar MSD6486XTAT, a 64-bit Quad-Core ARM Cortex-A53 processor with a Mali-450 MP4 GPU.
Memory: Typically equipped with 256MB DDR3 RAM and 512MB NAND Flash (often using the TC58NVG2S3ETA00 chip) for firmware storage.
Connectivity: Standard configurations include DVB-S2/T2 tuners, 3 HDMI ports, 2 USB ports, and optical audio output. Power Rail Voltages: Key voltage points include:
Main AC Input: 230V converted to ~300V across the primary filter capacitor.
Secondary Rails: 12V for main ICs and 19V–50V for the LED driver (depending on screen size, such as 43-inch models). CPU Core Voltage: 1.1V. Troubleshooting with the Schematic
When using the Hisense MSD6486T Service Manual or similar ManualsLib documentation, technicians focus on several critical sections:
Power Supply Section: If there is "No Standby Light," the schematic helps trace the AC input through the fuse and bridge rectifier to the large capacitor and MOSFET.
Backlight Driver: For "No Picture, Has Sound" faults, the schematic outlines the boost converter path (PWM_DIM and BL_ON signals) controlled by the TP.MS6486T.PB732 PWM controller.
Signal Path: For HDMI or tuner issues, the schematic allows for checking continuity between connectors and the MSD6486 SoC. Common Faults and Solutions AliExpress
TP.MS6486T.PB753 Schematic, Board Overview, and Repair Guide
The TP.MS6486T.PB753 is a widely used combo main board manufactured by CVTE (Dream-Future), frequently found in budget-friendly 32-inch to 49-inch LED TVs, particularly in models from brands like Hisense (e.g., 43N2170PW), DEXP (e.g., F43D8100H), and VU. Combining the main board, power supply unit (PSU), and LED driver into a single PCB, this board is a common point of failure.
This article serves as a comprehensive guide for technicians seeking the TP.MS6486T.PB753 schematic, providing an overview of its architecture, voltage test points, and common troubleshooting steps. 1. TP.MS6486T.PB753 Board Overview
The TP.MS6486T.PB753 is a high-performance, 64-bit smart TV motherboard designed for Full HD LED panels. It utilizes the Mstar MSD6486XTAT processor, which supports 4K processing and 64-bit operations, optimized for Android-based smart systems. Technical Specifications Main Board: TP.MS6486T.PB753 (CVTE) CPU: Mstar MSD6486XTAT (4 Cores ARM Cortex-A53) GPU: Mali-450 MP4 RAM: 256MB DDR3 (4Gbit x 16) NAND Flash: 512MB (e.g., TC58NVG2S3ETA00) Resolution: Support Full HD (1920x1080) Input Voltage: 19V / 24V DC 2. Understanding the TP.MS6486T.PB753 Schematic & Layout tp.ms6486t.pb753 schematic
The TP.MS6486T.PB753 schematic diagram outlines a complex, integrated system. Because this is a combo board, it includes: A. Power Management Section
This section converts incoming DC power (usually 19V) into various lower voltages required by the board components. 5V DC: Powers USB and peripheral components. 3.3V DC: Powers flash memory and tuner.
1.1V - 1.2V DC: Core voltage for the main CPU (MSD6486XTAT). 1.5V or 1.8V DC: DDR RAM supply. B. Backlight Driver (LED Driver)
Integrated into the board, this section uses a PWM controller (sometimes designated TP.MS6486T.PB732) to manage the TV's LED backlight panel. Output: Typically 32V–50V, depending on the panel size. C. Signaling & Processing
Tuner: DVB-T2+SAT ensures high-definition broadcasting reception. LVDS/V-by-One: Controls the LCD panel (e.g., T430HVN01.2). 3. TP.MS6486T.PB753 Repair Guide & Troubleshooting
If your TV does not turn on, has backlight failure, or shows a standby light but won't start, the TP.MS6486T.PB753 board is likely the cause. 1. No Power / Red Light Stays On (Standby)
Check DC Input: Ensure the external power adapter provides the correct voltage (usually 19V or 24V).
Verify 12V/5V Rails: Check if the standby voltage reaches the main power regulator.
Check Firmware: The NAND Flash (TC58NVG2S3HTA00) might be corrupted. Re-flashing using a programmer (like RT809F/H) is often necessary. 2. Backlight Issues (Sound, No Picture)
Check LED Driver Voltage: Measure the voltage at the LED connector. If it is low, the PWM controller or related MOSFETs might be damaged.
Inspect Components: Look for burnt capacitors near the backlight transformer. 3. TV Restarts Frequently Overheating: Check if the Mstar CPU is overheating.
Voltage Instability: Measure the CPU core voltage (1.1V). If it fluctuates, replace the filtering capacitors. 4. How to Enter Factory Menu Power On the TV. Press Menu on the Remote Control.
Navigate to Settings -> Sound -> Advanced Setting -> Balance. Set Balance to 0. Press 1-9-6-9 in sequence on the remote. 4. Firmware and Software Update (TP.MS6486T.PB753)
If the TV is stuck on the logo screen or power cycles, a software update is required. The TP
Obtain the correct firmware file for your specific LCD panel, as firmware varies (e.g., Hisense 49N2170PW). Format a USB stick to FAT32.
Copy the bin file (e.g., 512MB_Update.bin) to the root of the USB.
Plug the USB, power on the TV while holding the power button, and wait for the indicator light to flash.
Note: The TP.MS6486T.PB753 firmware download is available from various technician forums for recovery purposes. 5. Summary of Key ICs and Voltage Description Nominal Voltage CPU Mstar MSD6486XTAT 1.1V - 1.2V (Core) NAND 512MB Flash 3.3V (VCC) DDR DDR3 Memory LED Backlight Output
For further assistance, technicians can consult the Hisense HX32N2170WTS Service Manual which includes detailed circuit diagrams for the MSD6486T chassis.
If you can provide the specific brand/model of your TV and what the screen is doing (blank, distorted, or just a logo), I can help you find the exact firmware or point you to the most likely faulty component. Hisense MSD6486T Service Manual | PDF | Power Supply
The TP.MS6486T.PB753 is a combined LED TV motherboard (Main Board + Power Supply) commonly used in Hisense, DEXP, and other Chinese-manufactured smart TVs. Finding the Schematic & Service Manual
Full schematics for these specific "all-in-one" boards are often proprietary, but you can find the comprehensive Service Manual and circuit diagrams through the following resources:
KenotronTV: This technician forum hosts the Service Manual for the MSD6486T chassis, which covers the TP.MS6486T.PB753 variant used in Hisense 32N2170 through 49N2170 models .
Scribd: A digital copy of the Hisense MSD6486T Service Manual is available, featuring power supply details and electrical connector pinouts . Board Specifications
If you are troubleshooting without a full schematic, here are the key hardware details: Chassis/Processor: MSD6486T (CVTE architecture) .
Common Panels: Often paired with panels like the T430HVN01.2 .
Typical Issues: Technicians frequently report failures after power surges or lightning, often requiring voltage measurements at the de-multiplexer or resistor checks .
Are you troubleshooting a specific power issue or a display problem like vertical lines? Board overview
hisense, msd6486t(cvte) tp.ms6486t.pb753 tp ... - KenotronTV
Chassis : MSD6486T(CVTE) TP.MS6486T.PB753. HISENSE 32N2170,39N2170,43N2170,49N2170. для скачивания файла Получить поддержку KenotronTV Hisense MSD6486T Service Manual | PDF | Power Supply
Hisense MSD6486T Service Manual | PDF | Power Supply | Electrical Connector. Download as PDF, TXT or read online on Scribd. DEXP F43D8100H (шасси: TP.MS6486T.PB753)
(Refer to Sheet 4 - LED Driver)
BL_EN (Backlight Enable) - From SoC GPIO. Must be >2V.BL_PWM (Dimming) - From SoC. Usually 200Hz to 1kHz.ISET - Sets the current per string (usually 120mA to 400mA).This is usually a 6-pin or 12-pin connector connecting the mainboard to the power supply unit.
Note: Verify with your specific power board, as pin counts can vary between revisions (e.g., integrated PSU vs. separate inverter).
Power input and protection
Power management and regulation
Battery and charging
Embedded Controller (EC) / MCU
Display interface
USB and peripherals
Clocking, reset, and EEPROM