Chosen Solution
will the MacBook work without the display attached?
Yes it will. I you want to test it, disconnect the inverter cable and the LVDS cable from the logic board, connect your external monitor and boot the machine. You will also be able to use your wireless by taking off the airport wiring/antenna from the display.
I do not think it will work without the display being attached. I’m not 100% sure of that, though.
I don’t know why it wouldn’t. That’s the same as using an external monitor. Easy way to find out is to remove the display and hook up the monitor. Not very portable though. Good luck. Ralph Checking previous post I found a similar question and answer that may help you. Ralph Battery and LCD panel are failing, can I operate it “headless” safely?