Backlight works, but no display!

"ATT!

I tried all of the soft reboot solutions and nothing worked.

I dug a little deeper and found information about the display cable and that it can become loose.

I simply tapped on the bottom of my MacBook a few times in the position of the cable and suddenly, there was life!"

This doesn't sound like a video card issue, it sounds like a short circuit somewhere (maybe a blown cap or resistor? no way to tell without inspecting). Shutting down when you open the lid would indicate to me a safety mechanism when the unit detects a short or power spike trying to engage the primary display, and one of the involved chipsets terminates the power to avoid permanent damage. I don't believe it's a loose connector, because that isn't normally so predictable a result.

"Nick,

First: try disabling any power save and sleep feature in the System Settings.

Second: initiate a First Aid scan on the hard drive.

Third: Download any available updates from Apple.

Fourth: While you are in Safe Mode close the lid and open it again and see if the problem replicates.

If the problem does not replicate in Safe Mode it might be good to perform a fresh install after you back up your data.

This will tell you whether you have an issue with hardware or with the software.

I would love to hear the results of the steps above.

Thank you,

Michael"

I have a 2017 MacBook Pro 13 inch, I got it 2 years ago and last year I had to get the keyboard fixed. It was free because of the apple care. Apple care already expired and my backlight display, the flex gate, got ruined. I won’t pay 600USD + to get if fixed when they already admitted the 2016 MacBooks came with the same defect. Has anyone had the same problem and gotten it fixed for free?

"Do you still have this problem? I found a video somewhere on youtube that shows how to at least turn your laptop on and backup all the data you need. Me myself have been living with this kind of solution from late 2017.

So my HDMI port is not usable anymore, repair shop assuming it's my graphic card that cause this problem. The keyboard backlight works fine, the capslock button works fine. All that happens is the laptop screen is not showing anything after the macbook chime sound heard.

The step is turn your macbook and make sure the keyboard backlight is on. Put your laptop on couch or bed (any soft surface to cover all the hole on the backside of the laptop). I usually cover MacBook with blanket or jacket. Do this for about 30 second and then open your laptop, if the screen is not on yet repeat the step.

Sometime it takes up to 10 times to open and cover your laptop again with jacket. If you think it's not working after a lot of retries then turn off your mac by holding down the power button. You can turn it on again and retry the method above

People said that this trigger your graphic card selection caused by the sensor that detect the heat of your mac (since we covered all the holes with blanket / jacket / put it on soft surface such as bed). How? After you put your macbook on, the fan will always start rotating. The moment when you block the air that are flowing it will cause the temperature to rise and the macbook choose the other graphic card that are working.

Hope this helps."