Tpv56pb801 Schematic Diagram Install [WORKING ⇒]

TPV56PB801 Schematic Diagram & Install — Compact Guide

  1. Schematic Reference: Locate the AC input filter (L901, C901, C902) and the bridge rectifier (BD901).
  2. Physical Check: Measure AC across C901 (should be ~120V/230V). Measure DC after BD901 – should be ~340VDC.
  3. Follow the Schematic: The DC bus goes to the primary transformer (T901) and the PWM IC (e.g., U901). Check the IC’s VCC pin (typically pin 6 on an LD7575). If VCC is missing, trace back through startup resistors (R901, R902 – usually two 150k ohm resistors in series).
  • Schematic Check: Trace the output pins labeled BL- (Backlight Negative) and BL+ (Backlight Positive).
  • Adjustment: The schematic usually includes a variable resistor (potentiometer) for adjusting backlight intensity or a logic gate controlled by the PWM signal from the CPU.

TP.V56.PB801 is a widely used universal combo motherboard designed for 32-inch LED TVs. It integrates the power supply, LED backlight driver, and TV mainboard onto a single PCB, making it a popular choice for cost-effective repairs and universal replacements. Schematic and Technical Overview

  • AOC Monitors (e.g., 19” to 24” models)
  • Philips LCD Televisions (budget to mid-range series)
  • Envision / Top Victory Electronics (TPV is a parent company to these brands)