So when the system is running hard the heat can boil up cooking the T-CON board.” How Can I Mitigate the Black Lines in the Meantime?
MACBOOK PRO SCREEN LIGHTS UP BUT NO PICTURE SERIES
“The design of this series places part of the display’s logic within the main case placed just above the heat transfer fins of the heat sink. Otherwise, heavy usage and heat alone are enough to cause the black lines.ĭan goes on to say that this is now known as a T-CON board issue. It’s possible that your Mac’s fans have failed, or the vents have been blocked due to dust or other physical obstructions. If you use your MacBook for work, video editing, etc., for long periods, you’ll likely notice these lines rearing their ugly heads later in the day after the device gets hot.Īccording to Dan from iFixit, on 13-inch and 15-inch MacBooks, the T-CON board that sits between the heat exchangers within the main body can overheat, damaging it. Your MacBook might not show these black lines when you first boot it up – that’s because the common factor across all MacBooks displaying these black horizontal lines is heat.
Why Does My MacBook Have Black Horizontal Lines on the Display? But first, it’s important to understand what’s causing the issue to begin with. Yes, your screen or other internal components might be failing.īut before you get too upset, there are standard troubleshooting practices to try, which we’ll discuss below. Unfortunately, these black lines may be an early warning sign of faulty components that Apple is not yet fixing or replacing for free. This black line issue is quite concerning and surprisingly affects many MacBook Pro users, some of which are even petitioning Apple to recall these affected laptops. Is your MacBook Pro displaying black horizontal lines across the top menu bar of your screen? You’re not alone.
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