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I have the following issue:
Does anyone have any ideas? I’ve tried everything software wise, even disabled the discrete GPU with the gfx cardstatus app. The only thing I can think about at this point is the physical display or the cable going to the display.
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I agree with that, it seems one of the two but there's no way to tell without removing the glass from the assembly and try a replacement cable.
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I'm thinking the driver logic on the LCD panel is damaged as you can see the vertical lines of the failed columns. But it could be bad GPU logic as well.
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This model was part of a class action law suit filed against Apple resulting in a repair extension program that ran a short period of time and expired.
https://www.macworld.co.uk/news/mac/macb...
It was mainly about the GPU.
Hook your machine up to an external monitor and see if it exhibits the same anomalies. If so, you have a bad GPU.
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What does the external monitor look like? Does the problem show up with it?
из Dan