Tpv56pb801 Schematic Diagram: Pdf Upd

The schematic diagram for the TP.V56.PB801 Go to product viewer dialog for this item.

• Test Point: Verify 3.3V_STB (Standby voltage) first. If this is missing, the primary power supply stage is faulty.

TP.V56.PB801

The is a widely used integrated LED TV motherboard (combo board) that combines the power supply, LED driver, and TV mainboard onto a single PCB. Finding the specific schematic diagram can be essential for troubleshooting common issues such as "no indicator" light or standby faults. Schematic Resources You can find downloadable PDF versions of the TP.V56.PB801 tpv56pb801 schematic diagram pdf upd

universal LED TV driver board is a technical document used for diagnosing and repairing power and signal issues on this specific "combo" board (which integrates the power supply, LED driver, and main motherboard). Accessing the Schematic Diagram (PDF) The schematic diagram for the TP

Have you successfully repaired a TPV56PB801 board? Share your experience in the comments below (on our forum). Test Point: Verify 3

• Check on schematic: Inverter section – OVP (overvoltage protection) and lamp current sense resistors.
• Action: Locate the inverter IC (e.g., OZ964). Pin 2 = OVP; short to GND temporarily (test only). If backlight stays on, one CCFL is bad. The UPD schematic may show lower-value sense resistors to make protection less sensitive.

• Input power interface: accepts a primary supply (e.g., 5–24 V depending on variant) and routes it through filtering and transient suppression.
• Reverse-current and reverse-voltage protection: MOSFET(s) or dedicated FET-arrays prevent damage from reversed connections or battery insertion.
• Current sensing and limiting: a sense resistor and comparator or integrated current monitor detect overcurrent conditions and either throttle or disconnect the load.
• Thermal protection: temperature-sensing circuitry disables output when die temperature exceeds safe thresholds.
• Enable/disable control: logic input(s) allow microcontroller control for sequencing or power gating.
• Status outputs and diagnostics: open-drain pins or logic flags indicate faults (OVP, OCP, UVP, thermal) and can be tied to supervisory systems.
• Output stage and load switch: low-Rds(on) MOSFET(s) to supply the load with minimal voltage drop when enabled.
• Internal reference and regulators: provide stable biasing for analog and control blocks.

• AC-to-DC conversion
• Standby power (5VSB)
• Main power (12V, 24V)
• LED backlight driver