The author's MacBook Pro (Retina, 13-inch, mid-2014) was purchased at the Apple Store in Tiancheng Street, Beicheng, Chongqing in August 2014. The price was 9488 after the use of educational discounts. At that time, in order to replace the Lenovo Y470P for three years of service, mainly for development and use, the hard disk to buy 256G (128G in the configuration of the development environment, after installing the daily software, the available space is anxious ). Q&A First on the Q&A, to facilitate the value of your friends, specific details can read the full text. Q: What is the screen coating peel off? A: Like this, it will only appear on the Retina screen, which is a manufacturing process issue. Pictures from the network, invaded. Q: Will the coating fall off after the screen change? A: According to Genius' reply, the follow-up screen improves the process and will not appear again. Q: What are the conditions for changing the screen? A: It can be within three years from the time of purchase, and the screen is not considered damaged. Q: What is the screen change process? A: Before you change, please backup important data. During the maintenance process, Apple promises not to enter the system (protecting privacy). However, it does not rule out that the maintenance process leads to data loss. It is better to back up important data first. Apple's official website to make an appointment with Genius, carrying an ID (can not use a driver's license, passport, etc. instead) to the local Apple Store. Inform the screen coating off, directly change the screen, no need to prepare proof of purchase. Q: How long does it take to change the screen time? A: The Genius reply is usually 3~5 days. The author did not take more than 48 hours from home to pick up. Q: Why is the machine abnormal sound? A: It is a mechanical hard disk device, most likely a mechanical hard disk. But the author's MacBook is SSD, so this pot is not a hard disk, it may be a fan problem, such as hardware damage, such as foreign objects stuck. Change screen motivation Last year, I noticed that the screen was dirty, I didn't clean it, and I tried cleaning it with some screen cleaners. . The result is a growing area of ​​dirtiness. Baidu later learned that this was due to a process problem that caused the Retina screen coating to fall off. . . In the case of a black screen, the phenomenon is obvious. At the same time also found some articles, said that within three years there is a coating off the problem, you can change screen for free. But at that time, it did not affect normal use, and it did not care much. Until recently, there was another problem that was maddening: after the machine was running, it would make regular "squeaking" sounds at intervals of 5 or 6 seconds, especially when people were still in the dead of night. The most important thing is that there were concurrent software stalls and other situations. At that time, the first reaction was a problem with the hard disk. But when you think about it, the 14-year-old MacBook Pro is already using an SSD, and it's really hard to back up. So ready to go to the sale to change the screen + to resolve abnormal sound. process The author is from Chongqing and currently works in Chengdu. The May Day holiday returned to Chongqing, and took a computer to look at the Apple Store on Tiancheng Street in Beicheng. As Genius was not reserved at the time, the computer was not inspected and maintained. At that time, the staff was directly informed of the existence of two problems: off the screen coating, abnormal sound of regularity. The staff made the following reply: The coating can be changed directly without any problem. The abnormal noise may be a fan problem. It is recommended to check and repair Genius. For such a reply, it is still very satisfying, Apple's after-sales here is still commendable. Before the sale of a domestic brand mobile phone. . . The process twists and turns not to list. Since it is necessary to return to work in Chengdu after the holiday season, the Genius of Taikoo Li in Chengdu is scheduled for the weekend. Wait until the appointment time, bring a computer to the store. Genius checked in the ID card at the time of the reservation. As the author was working on the account and the ID card was not around, Genius told him that he could use a driver's licence or a photo ID like a passport instead. The good stuff was usually in the bag. After checking in, arrange Genius to check my computer. I told her the existing problems and got the same reply as the Chongqing store. For abnormal noise is also guess fan problem. Then he took two wires and plugged into the MacBook to perform hardware detection. The test results were consistent with the guesswork. The right fan on the hardware had a big exclamation point indicating the problem. Since the hardware has been insured, the fan's maintenance price was inquired about 300+rmb. Genius said that he will disassemble the machine for detailed inspection. If it comes to maintenance costs, he will contact me to decide whether to repair it or not. The screen can be changed for free. After signing the draw, leave the Apple Store. At the same time, in the search for “macbook fan†at Omnipotent, there are not many results, and the price ranges from tens to hundreds. Asked several families to tell me that this is not available, and I thought I couldn't escape the 300 more. At the same time, I received an email from Apple and looked at the amount of "RMB 0" payable. At 6 o'clock in the afternoon the next day, he received a call from Genius and said that it had been repaired and he could pick it up at any time. Moses praised the fact that the efficiency is really high ~ Pidianpidian's back package went to Taikoo Li to get the machine, during the period did not receive a notice about fan maintenance. Immediately after the arrival of the machine, open the lid screen is clear, white and red, it is perfect. At the same time, it was found that the AB side of the MacBook was completely replaced, that is, the entire upper cover was replaced instead of just one screen. The new screen will be slightly lighter than the old screen, but it is indeed a cold screen. Compared to the previous warm screen, I prefer the current screen. At the same time, I listened to the ear with my computer for a while and the abnormal sound disappeared. Asked Genius, saying that there is no problem with the fan. It should be something that is stuck. After cleaning it up. Asked at the same time if there will be coating off after the next screen change, Genius informed that the current process improvement, after the screen change will no longer appear coating off. So just happily holding the computer home. When I got my computer from Sunday evening, I didn't find a stuck condition. It was the fan that caused the problem of heat dissipation. The above is the experience of changing the screen and the maintenance of abnormal sounds. The whole process is very smooth and takes a very short time. I hope that I can use it as a reference for friends who have encountered similar problems.