MacBook Pro 2016 has a blank screen
I have a 2016 MacBook pro with a blank screen. Thinking it's just another Flexgate problem, I installed a brand new screen, which also comes up blank. External video works OK.
On neither the new screen nor the original one do I see icons when the screen is illuminated with a flashlight. This tells me there is neither backlight nor any video signal going to the screen.
My question is can there be video going to the external monitor with no video going to the internal screen? And, if so, what's the problem?
And I already changed the video cable from the logic board to the display, and reset SMC and PRAM.
Any ideas would be appreciated. Thank you.
[Re-Titled by Moderator]