VRAM, coated with compound, is located directly below. It is nearly impossible to rebraze the GP unit properly.
Usually this ‘repair’ ends up very sadly. They sentence GF650 GP unit (marking N13P-GT-W-A2) to being replaced. Here’s the main reason for troubled services offered by unqualified repair shops. Source of trouble False causeĮven a non-specialist would understand that problem cause lies within GF650 graphic processor unit.
2015 MACBOOK PRO SCREEN RECALL MAC
As the system is up and running, Mac is able to choose priority GP and switch between them depending on the workload. Upon turning on and before the system boots, Mac is using the discreet graphic card GF650 solely. If we take a look at the system report, there will be no sign of discrete GF650 video card there. Mac starts using it, and works until the next shutdown or reboot. It cannot find the discrete graphic, but recognizes integrated (‘on-board’) Intel HD4000 processor. Upon exiting the sleep mode, Mac initializes the GP unit again. After reopening the top the screen image will appear. If there was no disk encryption (that is, if the Mac is loaded immediately to desktop with a password), please try this: turn on the Mac even with black screen, wait until it boots up, then close the top –and put it into sleep mode.
2015 MACBOOK PRO SCREEN RECALL HOW TO
How to run Mac without screen working?Įven in such case you can run Mac. The power-on sound may be missing if mute mode is on, but it will reappear after a reset eventually. Feels like it boots and works, but with no image on the screen. At the same time you can hear the power-on sound, the Mac reacts to NVRAM reset. The next stage is when Mac being turned on with black screen, or the screen appears and disappears, back and forth. We recommend testing the computer for about 10 minutes when buying a second-hand Mac of such a model. After a certain time of the test proceeding, Mac shuts down. The GpuTest_GUI («donut») diagnoses the problem. Sometimes black screen is followed by Mac reboot, freeze-up or shutdown. Screen picture disappears, the Mac continues to work, the fans keep on turning, backlight is on and sound is adjustable. Initially the screen picture disappears during high workload, with high heat output, when Mac utilizes the discrete GF 650 graphic processor. Most often the problem develops gradually. MacBookPro Model ID10,1 – Retina with discrete graphics GeForce 650M, 1st-2nd lines on the table above. This fail occurred in the MacBook Pro Retina A1398 in the middle of 2012 and the beginning of 2013. The problem with black screen of A1398 (temporary or total), year of production 2012-2013 The repair is reliable and does not cause the BGA chip change. The program ended at the end of 2016.įortunately, we know how to fix these typical failures. In 2012 Apple acknowledged A1398 fail officially and extended the warranty period up to 4 years. Unfortunately all models have typical (generic) fails. MacBook Pro Retina 15 "A1398 modifications Since 2012, five A1398 platforms and a dozen of versions have been released.
These retina screens are still very popular and up-to-date in performance. The display, compact size, low weight and effective operation system made it uncompetitive. He was the world's first laptop with retina screen. MacBook Pro Retina A1398 appeared in mid-2012. «» Typical Fails of MacBook Pro Retina 15" A1398: black screen, turn-offs during work process