Use a USB-to-TTL adapter (3.3V). Connect to TX/RX/GND on the main board. Use Putty at 115200 baud to interrupt boot and flash via XMODEM.
The T-Con is working. Fault is on main board video processing (scalers, HDMI switch). v7 0 smart oled/led/lcd tv repair tips pdf free download
Find the ISET resistor on the LED driver IC (e.g., OZ9967, MAP3204). Increase the resistor value (e.g., 10kΩ to 22kΩ) to reduce current by 30%, greatly extending LED life. Use a USB-to-TTL adapter (3
Not a hardware failure per se. Run the built-in “Pixel Refresher” (LG) or “Panel Refresh” (Sony). For severe cases, use a service remote to access the OLED Compensation Cycle (WRGB cycle). The T-Con is working
The PFC (Power Factor Correction) circuit isn’t starting. Measure PFC output – should be ~380-400V. If 0V, check the PFC controller chip (e.g., FAN7530) and feedback resistors.