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Released in July 2018, the 15" MacBook Pro, model A1990, features a 15.4 inch LED-Backlight display with True Tone technology, TouchID, and up to 6 Core i9 Processor.

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2018 MacBook Pro Turning on but no video

I have a 2018 15” MacBook Pro. The display doesn’t work so it’s being used with an external monitor. It suddenly stopped outputting video to the external monitor. But it does turn on (the fans spin and the caps lock key can light on). I’ve tried different monitors and cables. I’ve reset the NVRAM and SMC and tried the standard troubleshooting. There are no signs of water damage. I put it in DFU mode and did a revive and restore using Apple Configurator.

At one point it did start displaying on the monitor for a few minutes and I started booting to internet recovery mode, but then it stopped and hasn’t displayed on the monitor again.

Is there anything else I can try?

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try disconnecting internal screen completely. remove back plate, disable battery, disconnect screen, isolate the connector with tape and reverse process to assembly. do a 3x pram reset loop and it will output main picture to the external screen.

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