X330 screen stopped working

[stephenlamppost]

I've had an X330 for a few years (bought from xyte.ch) and it's been great overall. Today I was using it happily, and suspended it to RAM this afternoon. A while later I opened it up and it had a completely black screen.

Despite many fruitless reboots, the screen does not come on. It still works fine otherwise, with an external screen (I'm using it right now).

I've opened it up and checked the connections to the main board and a.gain mod board... nothing obviously amiss. For good measure I re-seated the connector on the top-right side (main board)... no change. I could not figure out how to undo the main connector on the a.gain board.

Does anyone have ideas or suggestions about what might be causing this?

The screen assembly still gets power (the ThinkLight and LEDs are fine).

Thanks for reading.