MacBook powers up but no display

So I have a MacBook Pro mid 2014 Retina display a1502 model and the display is not working. 

started flickering occasionally but would continue to work, then one day it just stopped working entirely.

It still powers on, you hear the start chime and it works plugged into an external monitor fine, the iSight also works absolutely fine. 

another thing I have noticed is the keyboard backlight is dimmed on some of the function keys and I cannot change the keyboard brightness via the keys. 

I have shined a light through the Apple logo and can’t see anything through the screen. 

I spoke to a couple repair specialists who said it was likely the LCD cable as it was a common problem and simple fix so I bought a new one and changed it but unfortunately has not fixed the problem. 

Ive tried all the basic troubleshooting and can’t seem to find a solution and now concerned it’s a logic board/fuse issue :/

also took it to the Apple store just to see what they’d say and they said it was the LCD cable aswell but would need to replace the entire display and in typical Apple fashion recommended I just buy a new MacBook as obviously mine is 6 years old. 

anyone have any suggestions? photo included of the keyboard backlights.

thanks in advance