Σου παραθέτω ακριβώς το τι κάνει η T-CON από αγγλικό εγχειρίδιο:
The T-CON (Timing Control or LCD controller) board (on the LCD panel assembly).
It transfer the
universal image signal of TTL and LVDS signal to specific TFT (Thin Film Transistor) LCD.
This is the interface board that talks to the Logic board and the LCD panel to produce pictures on the
screen. White/gray glowing screen when it fails or not getting the voltage from the logic board (the 5 or
12vdc is supplied by switched transistor on the logic board).

οπότε αν έχει πεθάνει τελείως είναι πιθανόν να μην έχεις καθόλου εικόνα..