Macbook Pro 16" 2019 No Display After Lid Sensor Issue

[jasonr2000]

hi guys i have the above MacBook pro 2019 16"

i did some dust cleaning recently and i somehow damaged the lid angle sensor. so i purchased the nerdtool1 lid angle sensor calibrating tool and a new sensor.

installed it and followed the instructions to program the sensor.

and now im still getting no display out of the MacBook pro.

its booting up ok ive noticed the keyboard and touchbar is all lighting up.

it was also showing a display before i replaced the damaged sensor and now i cant get any display out of it.

i noticed down in the left hand corner where the sensor is there was some sort of magnet that also came off i got that back on and i think i lined it up correctly.

but still im not getting any display.

have i damaged something more than the sensor in this case ??

sometimes i can get the display on if i do a couple of PRAM resets and a couple of SMC resets and the new sensor seems to work then as the display goes out if i close it the macbook sleeps and then wakes up also.

but once shut down im back to the same issue again.


thanks for any help.

[mon2]

Check your local MobileSentrix (UK) branch if they offer the OEM lid sensor for the same model. Believe that sensor will be factory calibrated but confirm this before purchasing. From our experience, the sensor was just install and use without any additional calibration. Took only a few minutes for the repair. Our client had spilled some drink onto the unit and it was coated with green corrosion. Apple wanted the client to purchase a new unit.

https://www.mobilesentrix.ca/sleep-wake-sensor-flex-for-macbook-pro-16-a2141-mid-2019

https://www.mobilesentrix.co.uk/sleep-wake-sensor-flex-for-macbook-pro-16-a2141-mid-2019

Mobile Sentrix had this OEM (Apple) sensor for under $20 CAD. No nerd tool required.

[jasonr2000]

Check your local MobileSentrix (UK) branch if they offer the OEM lid sensor for the same model. Believe that sensor will be factory calibrated but confirm this before purchasing. From our experience, the sensor was just install and use without any additional calibration. Took only a few minutes for the repair. Our client had spilled some drink onto the unit and it was coated with green corrosion. Apple wanted the client to purchase a new unit.

https://www.mobilesentrix.ca/sleep-wake-sensor-flex-for-macbook-pro-16-a2141-mid-2019

https://www.mobilesentrix.co.uk/sleep-wake-sensor-flex-for-macbook-pro-16-a2141-mid-2019

Mobile Sentrix had this OEM (Apple) sensor for under $20 CAD. No nerd tool required.

hi thanks for the reply.

I will take a look at there website now.

I got the tool from nerdtool1 so im sure it will come in handy some day.

but on another issue would my sensor cause the display not to wake up at all ??

even after the battery has been disconnected ?

it was fine until I damaged my lid angle sensor but I can hardly get it to display anything now.

and if I do it works perfectly fine until its shut down again fully.

thanks

[mon2]

From the limited time of experimenting with the unit in for repair, I recall that the lid sensor, as expected, decides when there is or is not the backlight for the LCD. That is, without a proper lid angle calibration, the sensor may just believe that the lid is always closed so no point to drain the battery by enabling the backlight. I recall that we saw this in action when the trackpad was removed from the normal position. Then when we closed the lid, we could see the backlight disable or enable when opening the clam shell.

Can you test with an external HDMI screen using a USB-C dongle?

The nerdtool is interesting but is an arduino or pico pi being used as a SPI programmer. I do believe the project is open-source and on git hub somewhere.

[jasonr2000]

hi thanks for the other advice I will try this tomorrow and message my findings I have a USB C monitor so would that work the same way ??

[jasonr2000]

From the limited time of experimenting with the unit in for repair, I recall that the lid sensor, as expected, decides when there is or is not the backlight for the LCD. That is, without a proper lid angle calibration, the sensor may just believe that the lid is always closed so no point to drain the battery by enabling the backlight. I recall that we saw this in action when the trackpad was removed from the normal position. Then when we closed the lid, we could see the backlight disable or enable when opening the clam shell.

Can you test with an external HDMI screen using a USB-C dongle?

The nerdtool is interesting but is an arduino or pico pi being used as a SPI programmer. I do believe the project is open-source and on git hub somewhere.

well after trying with my USB C Monitor its not detected on the Mac ???

but the strange thing is the display is now working again.

could it be my cable isn't good enough ??

Thanks

[jasonr2000]

further update it was my USB C cable that was the issue second display is perfect.

[mon2]

Test the usb c monitor on another known good device. Also flip the cable by 180 degrees to test the opposite side of the blade. If the display works now then that is good progress.