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My MacBook Pro 13" (A1502, early 2015) is displaying a flickering screen with horizontal lines and all kinds of other distortions.

An external monitor hooked up by HDMI works just fine though without any artifacts even in mirror mode.

Can I regard this as hard evidence that the GPU is not defective? (And by that it's probably the macbook display that needs to be replaced)

  • Might be the connector cable to the screen. You'd need a service tech to look at it. – Tetsujin Feb 28 '18 at 20:04
  • Do you mean the connector cable from the lcd to the motherboard? I dis- and reconnected that one already, no luck – Faloude Mar 1 '18 at 0:20

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