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Update: I ran the restore function several times. Finally it ran through at some point without an error message. The AC2 broght an Padlock as a symbol. The system did not provide any real positive feedback. But I was finally able to repartition the SSD and install Catalina on it. I hope the...

A general question: Are holes in the underfill (see pictures) always a sign of damage? Or do such holes also arise during the manufacturing process of circuit boards?

It took a while to get the permission from the client. Restore brought this message (translated from german) ... "configurator was unable to perform the requested action. Apple control devices do not support this action."

I did get the password from the customer. Login into macOS and turn off from software works fine -> no error-message anymore. So what do you think - there is no issue? Because i can't remember having such a message before.

Same behavior with good battery - tested with two known good batteries. I also noticed that the touchbar doesn't work - at least it doesn't show anything when booting or in the login screen. Normally it should show something in the login screen, shouldn't it? We have no password for login.

I'm working on a 820-00850-A from a A1989 with liquid damage. I have a question about booting the naked logicboard (only charger with ext.HDMI) At every first boot it comes this error-message: "Your computer restarted because of a problem. Press any Key or wait a few seconds to continue."...

I'm working on a 820-01598-06 that had liquid damage around U7270 and U7210 and was stacking at 5V. Liquid damage is cleaned. PPBUS_G3H had a short to ground with 13.7Ohm. The same value i measured at L7270. So i changed U7270 and the Short was gone and i have 20V on the charger. The problem now...

Yes of course, mistake in my thinking. btw the machine is running without problems. Many thanks for your help - great. Only for better understanding - can you explain to me what happens with such an ALS error? Is the Sensor talking bullshit on the I2C? Why is the machine randomly crashing...

ALS don't work. I am now testing whether the crash problems still exist.

I removed R8556 and R8558, but the camera is still running.

It's running now more than 4.5h without any problem - with only webcam disconnected from T-CON.

ok, the machine runs now 1,5h without any problem. Before, the longest time was ca. 40 minutes. What does that mean.

Hello 2informaticos, it's now me working on this machine (ntcR is a work colleague from me). Disconnecting webcam means disconnecting the display (LVDS)? Or is there another connector only for the cam? The machine runs now for 1/2 hour without problems over ext. HDMI

Hello, i'm working on a 820-4924-A. It came in with 3 damaged/exploded Caps on the Daughterboard/Audioboard. The heat was burning a hole in the keyboard-backlight-sheet near the power-button. I changed the daughterboard an flex - the machine is running. Only the power-button don't work. A test...

ok so you think this underfill hole at u8600 is from a damage and not from production? What can i do next? Shall i get rid of the underfill and make a reflow or/and ultrasonic cleaning?

Here are pictures of the damaged areas - after cleaning with flux and heatgun. The filenames tell you the part/area. there are three pictures from u8600 with a hole in the underfill material - is this from the production process or could this be an damage?

Here are the voltages from the page "ssd support" ... PP0V9_SSD0 = 0,901V PPVCCQ_ANI_SSD0 = 1,800V PP2V5_NAND_SSD0 = 2,520V SSD0_S4E0_JTAG_TDI = 1,781V SSD0_S4E1_JTAG_TDO = 1,770V SSD0_SWDIO = 1,777V SSD0_SWCLK = 1,783V SSD0_S4E_JTAG_SEL = 0V SSD0_S4E_UART_RX = 0,669V PP1V8_IO_SSD0 = 1,800V...

Start in Target Disk mode don't work. i don't have a lot of experience with ssd problems, can you give me some starting help for troubleshooting

The revive option brings an error ... (AMRestoreErrorDomain-Fehler 6 - Failed to handle message type StatusMsg (Operation failed)) [AMRestoreErrorDomain – 0x6 (6)] ... restore kills the customer data. Is there no other chance?

I did it again: In the moment i plugin the usb-c cable between the two machines the Apple Configurator2 shows the Logo with RECOVERY (without pressing any key). without paying any attention to that, I used the key combination from the tutorial (Mr.Macintosh) - then the Logo changes from...