Backlight on for 200-300ms @ boot & stays off - otherwise 100% working
The backlight turns on for roughly 200-300ms when the computer first powers on but then turns off and never comes back on. The computer is 100% fully working otherwise. It has an image on the display and everything else is tested and works.
I have already tried replacing the PSU and inverter board, but there’s no change.
PSU output measures normal.
Inverter input does not measure normal.
The inverter board has 4 pins on the connector: V-in, ground, PWM, and Enable. V-in is the proper 12V, ground is obviously 0v, Enable is 3.3V , and PWM *should* be 3.3V but I am only measuring 1V. I inspected and measured the appropriate components on the board and they measure according to the schematic.
I found a similar question posted by another user with similar board experience who also did the same testing as I have, but a new PSU fixed his problem whereas it did not for mine.