Tp.mt5510i.pb805 Diagram Jun 2026

The 12V main rail must be stepped down to power the MediaTek processor, eMMC, and RAM. Check these standard voltage test points on the inductors/coils: Powers USB ports and provides stand-by operations.

Symptom 3: Sound is Present, But the Screen is Dark (No Backlight)

While variations exist, boards with the MT5510i chipset generally share the following specifications:

The LED backlight driver circuit handles a high voltage threshold designed for 32-inch to 43-inch LCD panels. Measures

The most critical part of the diagram for repair technicians is the pinout of the main connectors. Tp.mt5510i.pb805 Diagram

+-----------------------------------------------------------------------+ | HOT SIDE (AC INPUT) | | [AC Input: 100-240V] --> [EMI Filter] --> [Bridge Rectifier] | | | | | [Main Filter Cap (450V)] | | | | | [PWM Switch Mosfet] | +-----------------------------------------------------------------------+ || [Chopper Transformer] || +-----------------------------------------------------------------------+ | COLD SIDE (DC OUTPUT) | | | | +--> [12V Rail Secondary Rectifier] ----+--> [To Main Logic Processor]| | | | | +--> [To Backlight Boost] | | | | +--> [LED Driver Controller IC] --> [Boost Mosfet] --> [LED+ Output] | | | | +--> [Step-Down Regulators] --> Gen 5V, 3.3V, 1.5V, 1.1V | | | | +--> [MT5510I SoC] <--> [eMMC Flash] & [DDR RAM] | +-----------------------------------------------------------------------+ Voltage Distribution & Critical Test Points

Before replacing a board or a panel, check the physical jumper header labeled . 32-inch panels typically require 5V . 40/43-inch panels typically require 12V .

If the voltage remains static at the default 12V rail, check the boost MOSFET, the freewheeling diode, and ensure the signal from the CPU rises to ~3.3V when power is keyed on. Firmware and Resolution Modification

Understanding the schematic diagram is crucial for fixing common television issues like a completely dead power state, firmware loops, or a failing LED backlight string. Technical Specifications Overview The 12V main rail must be stepped down

: Built-in Wi-Fi and RJ45 Ethernet connection support.

Generally an issue in the primary SMPS circuit or a shorted main rail. Fix Action:

Full HD (1920x1080) and HD Ready (1366x768), configurable via software or jumper resistors RAM Capacity: 1GB DDR3 Storage Capacity: 8GB eMMC Flash Memory

Frequently indicates a failure in the integrated LED driver section or the LED strips themselves. Measures The most critical part of the diagram

: A switching regulator IC cycles a MOSFET to step down voltages through the main chopper transformer.

When troubleshooting a dead or malfunctioning TP.MT5510I.PB805 board, engineers look for specific test points (TP) marked on the schematic or silk-screened directly onto the PCB. Signal/Rail Normal Voltage Expected Location / Component Failure Symptom if Absent ~300V to 320V DC Across Main Filter Capacitor (Hot Side) Dead Board, No Standby Light +12V Rail 11.8V – 12.2V DC Cathode of Secondary Rectifier Diode Completely Dead, No LED indicator +5V USB 4.9V – 5.1V DC Output inductor of the 5V Buck Regulator USB devices fail, Boot loop issues +3.3V STB 3.25V – 3.35V DC Pin 8 of SPI Flash / Standby Regulator No red standby light, completely unresponsive V-Core 1.1V – 1.15V DC Near MediaTek SoC inductor Red Light stays on constant; won't turn on BL-VND 45V – 90V+ DC Backlight Output Connector (V+) Sound OK, screen completely black (No Backlight) Common Faults and Troubleshooting Solutions

The is a common "all-in-one" Smart LED TV motherboard (combo board) that integrates the power supply, LED backlight driver, and main logic board into a single PCB. It is widely used in 32" to 55" Smart TVs from brands like Atvio, Samsung (China builds), and Goldvision. Board Specifications & Architecture Chipset : Mediatek MT5659QHMT . OS : Typically runs a version of Android (Smart TV). Power Input : AC 100V-240V.

The main transformer steps down the primary energy into raw secondary DC rails (typically +12V and +5V). Because the MediaTek SoC, DDR memory, and flash ICs require tight lower voltages, a tree of synchronous buck regulators is distributed across the board: The tested LCD TV motherboard TP.MT5510I.PB805 works well