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Hello, I have this mac that was working, but stopped turning on unexpectedly. There was no contact with liquid.
It replaces the U7000, Q7030/40.
C7030, R7030/40 are okay.
Voltage:
I removed F7000/01, in the PPVBAT_G3H_CHGR_REG mesh there is 12.33V.
In diode mode on the PPbus 0.275v
Hello, I have this mac that does not turn on. According to the customer, it was connected to the charger and did not turn on after a lightning strike. There is no sign of burned on the board, but I identified that it has already passed through another workshop. A CD3215 was replaced (U3100), CPU...
Hi, I have this mac that won't turn on, however it has all the SSD voltages and the trackpad clicks. When I put the mac in DFU mode and select the "Revive device" option, I get a "Missing data volume" message. The customer authorized the "Restore" option, and although the mac displays the apple...
Hello, I have this board that is not turning on. The first LED is stable, the second one turns on for about 10 seconds and goes off. After about 3-4 seconds, the second LED turns on again, but this time it stays on. I honestly don't know if this is the standard switching behavior of this board...
Good afternoon, this mac shows no signs of oxidation.
Ja put another Bios, but not solved.
L7030 = 461
L8410 = 931
L7660 = 408
L7600 = 447
L3500 = 181
ALL_SYS_PWRGD 3,26V
PPDCIN_G3H_CHGR = 20 V
PPVBAT_G3H_REG = 13 V
PPBUS_G3H = 13 V
PP5V_S4 = 5,1 V
PP3V3_S5 = 3,3 PP3V_S4 3,3
P3V3G3h = 3,4 V...
This mac has a bubble on Flat J4402, I replaced the Topcase along with touch bar, in testing it worked, but then it stopped. I replaced the Q4400, but it didn't work. The LCD in the Bar Works.
Hi, this mac had liquid damage and came with oxidation on the USB-C controllers on one side (U3200 and U3100). I did a cleaning but it was not successful. When I made measurements in reverse diode mode on the LDO signals, on all four controllers, I got:
U3200
PP1V8_UPC_XB_LDOD: 0.466V...
This mac has a damaged r7900 resistor, I replaced it, but the PPbus started oscillating, I guess the U7800 is defective, right ?
Looking at the thermal camera the u7800 is oscillating the temperature.
This mac suffered oxidation in the u3900 region, I deoxidized it, replaced the damaged components, it worked perfectly. The customer decided to install macOS Monterrey and had Update Critical. I was able to update the macOS only when I unplugged the Touch Bar. Now the Touch Bar doesn't work at...
The client tried to format and install Catalina and ended up locking the mac, I tried to restore the T2, but it shows the following error "AMRestoreErrorDomain error 9 - Failed to receive a message from the device, might be a connection problem with USB host. (Communication error, possibly USB...
Good morning, this mac has suffered oxidation in the region of C1212. It came from another service where they reflowed the SMC, replaced it, but it won't turn on.
Voltage:
PPbus; 8,59V
PP3v42: 3,42V
ALL_SYS 0,115V
PP3V3_S0 0,056V
PLT_RESET_L 0,032V
SYS_PWROK_R 0V
PM_S0_PGOOD 0v
Does not...
Hello, I have already changed U6201, U6500, U6880 and U6630, but it didn't work. I removed the R6805 and it didn't work. I don't know what to do anymore, where to measure!!!
Good morning, I have a mac that came with fan spin, but it won't start.
PPVCORE_S0_CPU : stucked on 1.1V
I've tried another BIOS, but without success. I've tried other RAM memories too and found small oxidations on the contacts of the memory slots, I cleaned them but nothing changed.
I noticed...