The T-Con is working. Fault is on main board video processing (scalers, HDMI switch).
Symptoms: inverted colors, solarization, negative image. Replace the AS15-F, AS19-HG, or RT6935 gamma buffer IC on the T-Con (costs ~$5). v7 0 smart oled/led/lcd tv repair tips pdf free download
Check the main 12V/24V rail on the power board. OLEDs use separate boards for the panel’s VDD (8-12V) and ELVSS (-2.5V to -7V). If missing, examine MOSFETs near the transformer. The T-Con is working
Apply non-conductive varnish to the transformer core or replace the primary capacitor. HDMI switch). Symptoms: inverted colors
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.