While holding down the button, plug the AC power cord back into the wall.
The power supply section converts high-voltage AC mains input into regulated DC lines to feed the rest of the board.
When troubleshooting using the TP.MT5510I.PB805 diagram, the board is split into two distinct areas separated by a thick white line (the isolation barrier): the (high voltage) and the Cold Side (low voltage). 1. Power Supply Unit (PSU) Circuit
Measure the voltage on the main filter capacitor. If ~300V is present but there is no 12V output, check the startup resistors and the SMPS PWM controller IC. Tp.mt5510i.pb805 Diagram
Copy the correct recovery firmware file (e.g., allupgrade_5510i_...bin ) directly to the root directory of the USB drive.
If the voltage spikes up to 90V+ and then quickly drops back down to 12V or 24V, the onboard boost circuit is fine. The issue is an open-circuit or burnt LED bead inside the LCD screen array.
Built-in Wi-Fi, RJ45 Ethernet, 2x HDMI, 2x USB, AV Input, Coaxial, and RF Tuner While holding down the button, plug the AC
Analog resistor-ladder button inputs (Power, Vol+, Vol-, CH+, CH-). 5. Troubleshooting Common Board Failures Symptom 1: Completely Dead Board (No Standby Light)
Finding the official diagram for the is challenging. However, repair technicians have built a strong network for sharing knowledge. Here are the most reliable ways to find what you need:
| Reference | Component | Function | | :--- | :--- | :--- | | | MT5510 | Main SoC | | U2 | eMMC (Kingston EMC046‑627) | 8 GB flash + bootloader | | U3 | Winbond 25Q64FVSIG | 64 Mb SPI flash (backup) | | U6 | MP1471 | 3.3V standby regulator | | U7 | MP2380 | 1.5V DDR3 regulator | | U8 | MP1584EN | 1.1V core regulator | | U9 | AOZ1280CI | 1.8V analog regulator | Copy the correct recovery firmware file (e
Symptom 3: Sound is Present, But the Screen is Dark (No Backlight)
If the code is from a finished product (e.g., a POS terminal, tablet, or industrial controller), the original manufacturer (like Advantech, Aaeon, or a touch screen vendor) may provide the diagram under an NDA or support agreement.