Tp.v56.pb801 Schematic Diagram -

Technical Write-Up: TP.V56.PB801 LED Mainboard

1. Overview

The TP.V56.PB801 is a universal LCD/LED controller board (mainboard) widely used in the repair and refurbishment of LED televisions. It is a high-performance, integrated board designed to support LED backlight panels with a resolution support up to Full HD (1920x1080). This board is popular in the repair market due to its versatility, low power consumption, and integrated design, often serving as a direct replacement for failed proprietary boards in brands such as Samsung, LG, Hisense, and various OEM brands.

1. Primary AC Input & Rectification (Section A)

• Components: Bridge rectifier (usually a D3K or GBU series), fuse (F1), NTC thermistor, and main filter capacitor (large electrolytic, 100-150ВµF at 400-450V).
• What the schematic shows: The AC line enters through a fuse, passes through an EMI filter, and is rectified to pulsating DC. The +300V DC bus is then distributed to the switching transformer.
• Common failures: Blown fuse (shorted rectifier diode), bulging main capacitor, or an open NTC.

Common Failure: Blown fuse or shorted MOSFET in the primary section. Tp.v56.pb801 Schematic Diagram

This motherboard provides various signal interfaces for modern and legacy device connections: Marhynchus TP.V56.PB801 LED Driver Board - Amazon.in Technical Write-Up: TP

Introduction