The monitor is all back together and looks good. No more geography lesson of a sideways Australia.
This was a big PITA, though. There were four (or five?) film sheets between the backlight and the LED panel and it was a lot of work to ensure no debris got in between any of them, which happened a lot due to static cling. Several of the sheets had to come off multiple times, but I only assembled once. Keyboard compressed air spray is a double-edged sword. Get it too close to the film and it condenses the air on the backside requiring the last sheet to come back off to dry. Quality cotton makeup remover pads worked decently without leaving any lint. Dampening the pads with isopropyl alcohol, letting dry a bit, and using that to snag the debris helped too.
I saw no evidence that this monitor was opened before, but there was a small scratch on the back of the LED panel. I'm certain that I didn't create it. But I don't notice anything now that it's powered up.
The can of "Dust Off" from Walmart is poor quality. You have to squeeze the trigger pretty hard and it's inconsistent with trigger-to-output.
Thanks.