Usually caused by missing VGL or VGH voltages. If the 3.3V logic supply is present but these high-voltage rails are missing, the DC-to-DC converter IC may be faulty.
Asha laughed and ran out into the city to call a friend. The filament threw light across the lab like a sun, not owned by any single person, but shared. The 32ap11s4lv1.1 — whatever else its letters might mean — became a verb in the city’s language: to 32 was to gather, to bring a thing to the light and let it be held. It had no more claim to power than that, and it had everything that mattered. 32ap11s4lv1.1 schematic diagram
Integrated Switching Mode Power Supply (SMPS) / LED Driver Board Typical Application: 32-inch LED/LCD Television Chassis Usually caused by missing VGL or VGH voltages