Tp.v56.pb801 Schematic Diagram

Insert the USB drive into the board's USB port while power is disconnected.

TP.V56.PB801 is a widely used universal "three-in-one" (combo) motherboard for LCD/LED TVs, integrating the power supply, backlight driver, and TV mainboard onto a single PCB. 🛠️ Technical Specifications This board is typically found in 32" to 42" TV sets. TSUMV56RUU-Z1 or similar V56 chips. Backlight Power: Supports outputs between with up to power delivery. Input Ports: Includes HDMI, USB, VGA, and AV. Resolution Support: Capable of driving panels up to (Full HD). ⚡ Circuit Breakdown

The master chip and memory modules cannot run directly on 12V. Therefore, the schematic outlines several step-down (buck) regulators to create localized low-voltage rails: Tp.v56.pb801 Schematic Diagram

Check the backlight boost IC and components like MOSFETs, Schottky diodes, and inductors for damage. Stuck in Standby (Red Light): Check: Verify the standby voltage.

Core voltage required by the TSUMV56 processor logic. LED Backlight Driver Circuit Insert the USB drive into the board's USB

If this reading is zero, trace backward to locate open fuses, failed bridge rectifiers, or blown thermistors.

| | Typical Specification | Key Role | | :--- | :--- | :--- | | Main Processor (CPU) | TSUMV56RUU / TSUMV56RUE-Z1 | System control, video decoding, and signal processing. | | SPI Flash (Firmware) | MX25L3236 / W25Q32 (4MB) | Stores the TV's bootloader, firmware, and on-screen display (OSD) settings. | | DDR Memory | DDR3 (typically onboard) | System RAM for the main processor; used for buffering data and running applications. | | Backlight Driver | 35W-45W, 520mA-600mA | Provides constant current to drive the LED backlight strips. | | Key Power ICs | OB2273CMP (PWM) | Used in the power supply section for voltage regulation and switching. | TSUMV56RUU-Z1 or similar V56 chips

Understanding the pinouts is critical for troubleshooting and panel matching.