Dark screen, backlight working
Hi all,
Display flickered and went dark while using it. Backlight is working, and external screen is working through another mac connected by thunderbolt; everything else also working fine via external mac.
Have reset NVRAM and SMC to no avail.
Also tried reconnecting LCD cable (but only on logic board side - haven't tried doing screen side yet) - this made a small difference as display worked on startup for about 10 seconds, before flickering and going dark again.
Another forum suggested it may be the logic board? I am fishing for other tips and tricks or diagnosis steps I can try first as this is an expensive replacement for a 2nd hand (refurbished) machine. I live remotely and difficult to get to a tech.
Is there a layman's way to test the logic board? Any advice much appreciated.
좋은 질문 입니까?