t.vst59.031 schematic diagram » t.vst59.031 schematic diagram

T.vst59.031 Schematic Diagram =link=

t.vst59.031 schematic diagram — detailed descriptive content

BLON

The schematic includes a 6-pin header labeled "Inverter." This provides the (Backlight On) signal and ADJ (Brightness Dimming) signal. If your TV has sound but no picture, the schematic helps you trace whether the board is actually sending the "Turn On" signal to the backlight driver. 4. Audio Amplifier

  1. Measure VCC_PANEL at CN2 pin 1. If matches JP1 setting (e.g., 12V), move to LVDS signals.
  2. Use a logic analyzer or oscilloscope on LVDS pair pins (e.g., A0- and A0+). No activity → TSUMV59 is not sending data.
  3. Check the TSUMV59 core voltage (1.8V) and crystal Y1 (24MHz).
  4. If all voltages correct but no LVDS, the TSUMV59 may be damaged or firmware corrupted. Reflash U5 (SPI flash) using an external programmer, following the schematic’s pinout for U5.
  • UART/Serial: The PCB layout usually includes unpopulated pads for UART TX/RX/GND. This is used during manufacturing for debugging or flashing firmware via a programming tool (like the U-Boot console).
  • Key Pad: Connection for the tactile switch board (Menu, Source, CH+, CH-, Vol+, Vol-, Power).