09-10-2017 03:51 PM
I see a lot of the black LCD screen issue. I have this same issue. The answer is to replace the motherboard. What part of the mother board is bad? I would assume it is the video chip. These motherboards cost about $350. Not worth it to fix it if you have to pay for the motherboard. This would make one to think about switching to another brand. Why have an external HDMI port if it does not work when the LCD screen is black. You would think that this external port would be used as a diagnostic port for the LCD screen.