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2.4GHz, 2.7GHz, or 2.8GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.8GHz) with 6MB shared L3 cache. Released February 2013.

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HDMI port not outputting. even when screen is disconnected

Hey guys,

I got a 2.4 GHz Retina 15" Early 2013 with a dead backlight. I disconnected the display and I'm trying to output through HDMI but the port itself does not work. I have a thunderbolt to HDMI adapter and it does work as it does output, but overtime it'll disconnect and I have to shutdown the laptop and power it back on for it to work again.

If anyone has a solution for this, please help me out. Thanks!

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It sounds like the IO board may be failing. Check out this guide for instructions on how to replace it. If you think the adaptor you're using could be faulty, then I'd recommend trying to borrow a separate adaptor for testing, or taking the device into a repair store for testing. It might also be a good idea to inspect the interior of the device for other signs of damage—something like this could technically be caused by a fault on the main logic board as well. Good luck!

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