Ilpi-354 V.a Schematic ((full)) -

This usually indicates a backlight driver failure . Verify if you have ~17.5V at the input of the driver IC (pin 9) and check for a ~3V Enable (ENA) signal from the logic board.

A complete breakdown of the schematic divides the circuit into four distinct operational blocks: 1. Primary AC Input and EMI Filtering Stage Ilpi-354 V.a Schematic