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I have a macbook pro 2017 non-touch bar. Today I started up with all these screen lines and glitches. Until now i tried to reset pvram and smc but not worked at all. Even I tried to “safe boot” or diagnostic tool from apple but not detect anything an the problem still goes. Please someone can help me!! Thanks so much,
This tearing effect is a scan issue within the T-CON unit which is part of the display assembly. You’ll need a new display assembly MacBook Pro 13" Retina (Late 2016-2017) Display Assembly and here’s the guide MacBook Pro 13" Function Keys 2017 Display Assembly Replacement
Hi If it’s showing it on a external display that would lead us to believe that your gpu is failing but on onboard graphics that’s very very rare I would ether update it or bring it to a apple store just in case it’s a known software issue But if we diagnose it and it’s the gpu you will probably have to replace the logicboard as replacing the cpu(gpu is part of it) really isn’t practical for anyone who isn’t doing these sorts of repairs frequently Hopefully this helps Any questions please ask Thanks:-)