Re: T203 AsProgrammer Error
I want to know what software is used to repair the SN there are tutorials?...
smzlwan223
Member
Last Activity: 02-29-2024, 05:48 AM
Joined: 03-23-2022
Location: 广东省广州市
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Re: A2141 (2019 16" MB Pro) Strange macOS install issues. NAND? WIFI? FIRMWARE?
Tell you a very bad news, you this kind of fault, there are two kinds of hardware damage caused, first CPU, second, graphics card, in the past maintenance experience, encountered more graphics card problems, replacement graphics card, the problem is generally resolvedLeave a comment:
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Re: A1990 MacBook Pro boot looping
There is another solution to this problem, which is to modify the circuitry, to solve the reboot problem, but the researchers have not yet published this solution, and friends around me have learned that it is partially solved by modifying the temperature control, you can go into safe mode, view the system error log, find the corresponding point to modify the circuit! You can try... !Leave a comment:
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Re: A1990 MacBook Pro boot looping
We generally recycle chips from customers who scrap their motherboards, but we also get them from our peers. Buying them online requires a certain element of luck, which involves, sellers and buyers, IC dismantling, manual problems, and temperature control, if you don't handle it well, it will break!Leave a comment:
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Re: A1990 MacBook Pro boot looping
205/2000
Good News and bad news! This kind of problem in my past maintenance experience, encountered a lot of similar models of similar failures, are a problem, CPU bad, BAD CPU! BGA CPU replacement perfect solution! If the appearance of the test, no problem, other measurements, are redundant!Leave a comment:
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Re: imac 2017 820-00609-A mising damaged components ??
The network card end dropped, which should have been accidentally knocked off when removing the motherboard. This will not cause this situation. In my past personal maintenance experience, I have encountered: 1. The hard disk is partially damaged, 2. The WIFI module, 3. The memory is not lit or damaged, 4. The video card is partially faulty. You can first remove and disconnect the hard disk cable, and then insert and install the Apple system USB flash disk, Check whether you can successfully access the USB disk installation...Leave a comment:
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Re: Request for A2115 iMAC 2020 5K schematics
通用领域
生物医药
试试文档翻译
A2115,初步看了你的维修过程，这个机器的上电时序的先弄明白，要不然，修起来很吃力，虽然这款机器没有电路图点位图，但是可以很确定的是，大致的上电流程和以往的机器差不了多少，1，待机部分，也就是主板4个灯第一个灯，灯亮代表，主板待机正常，维修修这个部分，可以参考，A2159主板待机部分来修，因为，T2，与A2159类似。待机上电时序，大概是，1，公共端12v正常之后，给3.3v,待机IC供电，输出3.3v，再给T2主电源供电，T2电源再输出，相应的电压，如果是后继有短路，就会保护没有电压输出，你维修的时候，可以用可调电流表，来修复图，把电压调制为12V...Leave a comment:
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Re: iMac Pro 2017" DFU Restore Error
Error 4014,1. It is like to know what parts you OEM, this is very important, second, whether you have removed the CPU cooling iron part, because removed, in the installation is very hot lead to the CPU pin deformation, or foreign body, not installed in place bending CPU. 2. Causing a 4014 error. I made some notes earlier. First, the hard disk part causes the hard disk part, such as the power supply, the hard disk and the T2 communication part, second, T2, detecting the voltage required for the T2 standby, third, the I2C bus part, fourth,...Leave a comment:
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A2115 820-01779-04 replace t 2 Break Activation Lock
A2115 820-01779-04 replace t 2 Break Activation Lock 1 remove motherboard 2. Remove the hot iron part of the FAN 3. Remove the T2 shield LID 4. Heat insulation with high temperature tape around t 2. 5. T26 with a BGA strip lock. Remove T2 Clean Pad 7. Replant unlocked t 28. On the BGA mark position note not to shift 9. Set up the T210. Install Brush DFU brush T211. Restore the T2 installation system 12. PERFECT REPAIR INTO THE SYSTEM
[ATTACH]269168[/ATTACH]
[ATTACH]269169[/ATTACH]
[ATTACH]269170[/ATTACH]
[ATTACH]269171[/ATTACH]
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Re: MacBook Pro 16 2021 (M1X) 820-02100 Schematics Are Here!
[attach][attach]269158[/attach][/attach]...Leave a comment:
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M1 PRO a2442 820-02098-07 a2485 820-02100-11 water intakes lead to non-boot,
Fault, water into the second repair does not start. MOTHERBOARD: A2485 820-02100-11
1, dismantling inspection, found that the motherboard, touch board interface corrosion, the board has burned.[ATTACH]269134[/ATTACH]
2. There is also corrosion around CD3218B12[ATTACH]269135[/ATTACH]
3.3 audio amplifier parts, the surrounding corrosion, although the home has been cleaned, but still vaguely see, water left behind a variety of crimes,[ATTACH]269137[/ATTACH]
4. There is also capacitor corrosion around the wifi module[ATTACH]269138[/ATTACH]
5. Look at the... -
Re: T2 Chip Programmer Tool
Check to see if the ROM version number was changed back to the latest version number in the process of fixing t 2. The result of the experiment is that the version number of the t 2 Rom data is the old version number. The experiment shows that the ROM version number is not the fundamental data for his jailbreak, my software is not very understand, hope you friends, there is no good program, I can do experimental testing, at present my inspiration only these.Leave a comment:
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Re: T2 Chip Programmer Tool
I have an A1932, did the following experiment, 1, try to read the Rom to the latest version of the ROM im4p.. Illb .. Iboot-7459.101.2... Change it to the old jailbreak version number, M4P. Illb .. Iboot-6723.80. 9, change the inside data, Swipe Rom, power test, found that the computer can not start, feeling ROM IC is not good welding, welding a few times the same effect, 2. Finally, the original backup ROM data brush to write in, the computer can boot, the current test through this experiment, came to the need to verify before boot, t 2, Rom version,...Leave a comment:
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Re: T2 Chip Programmer Tool
[QUOTE=sinaps1;1137421]Found it. is a version iboot-7459 and I guess is updated to the last one.
I am not sure if I re-programm the ROM with an older version will cause the Macbook fail to boot at all.
Did anyone tried to flash the T2 ROM with older Bridge OS after it was updated?
After I changed the serial number on the same .BIN file of the ROM it is not able to contact the APPLE server.. seems like the contact POST method is tied to the Serial number in the ROM.
The serial Number was checked online if...Leave a comment:
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Re: 820-01700 A2141 DAMAGED T2 ROM IC (dump from other rom?)
You can go into DFU mode, just swipe the phone to restore it, use other roms as well, and have to refresh the T2Leave a comment:
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Re: Need help with 820-00165
You're too kind! Yesterday through Wechat and Goksi75, after the video to see the fault, it is very easy to find the problem, before the fault description, the maintenance of the problem caused by the wrong direction, in fact, the fault is caused by the internal program Error U6100 Rom. You can use a programmer to brush the factory BIOS ROM file....Leave a comment:
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Re: Need help with 820-00165
Or You could try replacing the U8130 IC.Leave a comment:
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Re: Need help with 820-00165
Looking at the picture you sent, I feel that your capacitor seems to be changed to the wrong capacity, remember must be changed into 1UF, so that can play the RT delay circuit.Leave a comment:
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Re: Need help with 820-00165
[ATTACH]259826[/ATTACH]It's a problem I've had a lot of trouble with in the past, and I've been working on it, and I hope it helps. This is a rough sketch I made for you. I hope you can understand it. My English is not very good, can only use the translation software to communicate with you.Re: Need help with 820-00165
[ATTACH]259826[/ATTACH]It's a problem I've had a lot of trouble with in the past, and I've been working on it, and I hope it helps. This is a rough sketch I made for you. I hope you can understand it. My English is not very...Leave a comment:
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Re: New Members - please post your introductions here
大家好我smzlwan223 来自中国广州，目前从事苹果笔记本维修有12年经验Leave a comment:
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