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The board stuck at 5V and 0.0079A. There is no liquid damage. The cap C5278 was burned out (had a real hole). I changed C5278 and C5222 and U5200 PPVBAT_AON_CHGR_REG have now 0,5v (diode mode) PPBUS_AON have only 1.1v What would you do next? PS: is not in DFU mode

I'm working on a A1989 with 820-00850-A. The machine came with the following issues: Camera not working, all four USB-C Ports not working and the battery needs to be changed. This Macbook was the dirtiest one I've ever seen. The entire machine was completely full of dust inside. The contacts of...

I'm working on a water damaged 820-3476-A. I did a lot of work, cleaning the board and changing this parts: C5120, C7095, C7102, R7095, R7096, C3740, C2951, R7080, C5131, C1950, Q7520, Q5490, R5491, R5492, Q5480, R5481, R5482, U5110. I did a reflow for U5000. The naked board starts with 36mA...

I'm working on a 820-00426-A wich is running on a charged battery. It is not running/charging with the original charger (85W). On my laboratory power supply with 19V it's charging and running. When i plug in the charger the first time, green light is flashing one time - then nothing (no green...

I'm working on a 820-01041-A which came with a diagnosis of liquid damage. The liquid damage was treated unprofessionally and the indications of the damaged areas have largely disappeared. A few areas was untouched and still corroded ... - RB631, RB641 The pads of PPBUS_G3H was gone, i made a...

I am looking for a replacement ic for UC710 SN621371 VQFN. I can't find any Datasheet for SN621371 VQFN to search for a replacement ic. I found TPS621351RGXT which seems to be similar, but without Datasheet of SN621371 its not possible to compare.

The first time i was working on this board it had kernel panic issues and was always rebooting. It was an apple refurbished board in bad condition. There was a long screw in a short hole on the left side of J8500 and the right side of J6600. The BIOS U6100 had a short to GND at pin8. I changed...

I'm working on a 820-00165-A. Without battery PPBUS_G3H is 8.56V. With battery (no charger) PPBUS_G3H is 7.23V With battery and charger PPBUS_G3H is 7.20V climbing slowly up to 8.14V (maybe more after long time) The machine is booting with and without battery. The battery is charging, Do you...

I'm working on a 820-00840-A that had a lot of water damage. Description from customer "no more reaction. Water damage - the device was for a short time submerged in water". After fixing all the damaged areas finally PP3V3_S0 was missing. I changed U7650 to fix this. The board have 20V and uses...

This MB had a liquid damage at the audio-board and did get a new Audio board and flex cable. But there is no output at the internal speakers. Output headphone is ok. SPKRAMP_RESET_L = low, diodemode is 0,512 SPKRAMP_RESET_L = low, diodemode is 0,002 I removed U6400, C6103 and the flexcabel to...

I have a 820-00875 with a burned hole under the caps C8503 and C8504. I fixed this and the board is running. Only these two caps are still missing. Can I leave out the capacitors or are they important? The pads of PPVOUT_S0_LCDBKLT are completely gone.

I'm working on a 820-02016-A. The machine had a liquid damage. We renewed the Audioboard with Flexcable and the Trackpad with Flexcable. The board 820-02288-A (keyboard-controller?) had also liquid signs. The logicboard had no liquid damage and looks like new. The problem ist, that even the...

I fixed this board (liquid damage). At the final test FaceTime shows this error message (translation from german): "No Video - FaceTime couldn't get a videosignal from the connected camera. Maybe a restart can fix the problem." The ALS is working. Same behavior with two displays. The camera LED...

I got a 820-01700-A in on which the diode DB549 and the solder pad of Pin2 are missing. I have problems reconstructing the solder pad. I can't put a wire bridge anywhere because the line goes directly to UB400 Pin81. How important is this diode? Can the diode be left out?

I refurbish a 820-02020-11 which had a bad liquid damage. I'm short before to finish it. My last problem (i hope so) is the touchbar - it only shows green vertical stripes (see picture attached). Unfortunately I don't have a known good touchbar. So i tested the board with three different...

I'm working on a 820-00165-A that came in with water damage. After fixing this the board now behaves as follows: It starts normally when booting for the first time. After that it always gets stuck at approx. 223mA. If it has been off for a while, it starts up again normally for one boot process...

I need help with a 820-01700-A. It came with liquid damage and one completely dead usb-c port. Three usb-c ports was working with 20v and booting into the login mask. I fixed the liquid damage areas on the board. The most liquid damage was around UB300, UB400, UB700, QB701, LB700, R8601, C9081...

I'm working on a 820-01041-A with no picture. I found liquid damage on a view areas of the logicboard and on the board of the display. The flex-connector on the display-board (TConn) and the flexcable was damaged/scorched on the left and right side. I changed the connector and the flex. The...

Apple gave the customer the diagnose that the ssd is dead - logicboard must be changed. I can't find any liquide damage. The board brings the question mark folder. The hall-sensor on the right side was gone - i put a donor part on it. R8604 looked like somebody did some work on it. so i...

This board came with water damage arround Q8400 and no backlight. Picture is present and it boots into the login-screen. The board was in terrible condition. I think it was a refurbished board from apple. the customer promised me that he bought an refurbished macbook and there was no repair...