원문 게시자: brun064 ,
I experienced the same issue as the the poster here: https://discussions.apple.com/thread/7508542?start=0&tstart=0 I had the same vertical bands across the screen. I could boot to internet recovery or diagnostic mode and the lines stayed. I did a PRAM reset and it would boot up with the lines and then go blank. I could SSH into the mac like it was working normally but I could not VNC into it. I took it to the Apple store and quoted me about $300 to fix it by replacing the logic board. Considering a new one is $499, I decided against it. I figured there wasn't much to lose and decided to try and reflow the GPU. I disassembled the mac, covered everything but he GPU in tin foil and used a heat gun on low for about 30 seconds, waving slightly. I used an infrared thermometer to check that the temperature was up to ~320F for at least 5 seconds. FYI, the GPU is the chip under the heat sink closest to to the back panel. I think the teardown only shows the intel GPU version. Since I had it apart, I replaced the PRAM battery as well (I doubt that was the culprit though). After re-assembly it booted up just like normal without any bars/lines. I watched Netflix on it for a couple of hours without issue. The heat gun cost me $23. That plus some aluminum foil and thermal paste and I have my Mac back. I'll keep you guys posted on progress. Even if this only lasts a couple of years it's worth it.