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Hi, everyone. I'm working on this board with liquid damage near U1900, R5614, C1210 and U5800. I've replaced a few resistors and caps in those areas; some weren't turning on before. So, after all the work I've done and doing a U.S cleaning. The board now comes on and the fan is spinning at...

Hi everyone, I need some quick advice, please. The MacBook came in with no power. Trackpad clicking and cycling. It has been opened before, presumably by the customer. The screen shield is missing for both the backlight and LVDS connector. There are no obvious shorts under the thermal camera...

Good morning, everyone. I received this MacBook for repair; it turns on but doesn't charge. The USB-C ports weren't working, and the AMP meter is cycling. After inspecting the logic board, I found that C5202 was blown, and PDCIN_AON_CHGR_R was shorted. I replaced the capacitor, and now it gets...

Hi everyone. CPU VCore present. Fan spins on then off then on and stays on full speed. No USB activity light turns on but not blinking. PPVCC_S0_CPU - 1.69V steady Very minor liquid on U1930 pin 6. U1930 replaced. The rest of the board is clean. Mac started to boot to the system and works...

This Mac was left in a humid and freezing environment overnight, and the next day it stopped working. There are no signs of corrosion or liquid damage. When I plug in the charger, the voltage goes to 20V, and the amps vary between 0.07a and 0.9a. After a few seconds, it drops to 0.03A, rises...

The Mac came in for a screen replacement. I've replaced the screen it stops working. Trackpad clicking in a loop. I've replaced screens on a hundreds of Macs and never had this issue. Getting 20V and 0.0230A LogicBoard was stand-alone. All AWAKE and SLP are cycling every 14 sec PP1V2_AWAKE -...

Hi, we have an A1990, i9 & Radeon 560X. Before it was freezing every few seconds, almost as if failing SSD, even on external macOS installation. I have tried a clean reinstall, revive + restore T2 firmware and it now works fine, other than it seems to kernel panic after some time in sleep...

Hi, everyone. Hope you can give some light on this issue. Got this MacBook with no display. When disconnecting the battery and touchpad it boots to the system, but if either is connected it will not display, or sometimes the Apple logo and kernel panic. I've replaced the touchpad and battery and...

Hi, everyone. Need help, please. Die suddenly for no reason. The logic board is very clean. When connecting in AC2 it shows straight in Recover mode. We tried to revive it in DFU mode and it failed. LogicBoard stand-alone. PP1V2_AWAKE - 1.2V PP1V8_AWAKE - 1.8V PP3V3_AWAKE - 3.35V PP1V1_SLPS2R...

I tough it may be useful for everyone with the same problem. PP1V1_UPC_XB_LDO_BMC Missing. This line is created by TB ROM (U2890) this IC has its own firmware. All LDOs on the CD32 ON, except PP1V1_UPC_XB_LDO_BMC I've replaced both USB-C controllers 2 times, ISL9240HI (U7000), W25Q80DVUXIE...

H, everyone. I've received it to repair as liquid damaged. Dead board and after some work and jump wires on R5620 pins 3 and 4 to it's test points and cleaning, it now turns on. Bad liquid on LCD connector and no display. EDP_INT_AUX_N shorted. Fixed by replacing the U9850 MUX converter. It now...

Hello everyone. I need help, please. Got this Mac in to repair, and it's stuck on chime sound, sound is cycling, video link showing the issue. It gets backlight, but no display. BIOS flashed with another Clean ME firmware and still the same. PPBUS_G3H = 13.3V PP3V3_G3H = 3.41V PP3V0_G3H = 3.0V...

Hi everyone. Need help here, please. Liquid damaged around U3200/U3200 and UB300. PP3V3_G3H shorted – CB300 faulty and replaced. I have already checked all rails on page 120 and 121 for shorts and all rails are fine. 2 Caps replaced as it was bad corroded. C3108 - PP3V3_UPC_XA_LDO C3100 -...

Hi guys. I need help, please. Need data on this. Trying to fix this MacBook Pro (16-inch, 2019), but no success. Customer stated that before it dies was boot looping and sometimes stuck on Apple logo. With battery, it draws 20V and 2.5A. Without 20V 0.07A. Trackpad clicking, no display. On Apple...

Hi everyone. This MacBook had liquid damage about 10 months ago. I've replaced a few components and done U.S cleaning and it is back to life. So, now it is back to me with no power: TrackPad clicking and a loud fan. After opening, I found a blown UC710 (SN621371) that I only found the...

Hi everyone. Help please No signs of liquid and no physical damage to the board. L7130 - CHGR_PHASE - 12.58V L7195 - P5V1_SW - 3.33V L7430 - PPDDR_S3_REG_R - 0V L7320/10 - CPUVR_PHASE1/2 - 0V L7630 - PP1V05_S0_REG_R - 0V PPBUS_G3H - 12.58V PPVRTC_G3H - 3.33V PP3V3_S4 -0V PP5V_S3 - 0V...

Hi everyone. Dealing with this board that does not display, but fan is spinning, battery is dead. Battery replaced, same issue. It had battery replaced a few months ago. It will sometimes not power on and missing PP5V_S0. 99% of the time when it's on and no display, it will have all the...

Hi everyone. I need help, please. This mac came as no power after battery run out. Opened and found a little corrosion on the board due to humidity and dust. All cleaned, and I found C9327 0 PPVIN_S5_HS_GPU_ISNS shorted to ground, so CAP replaced, and then I found U8001 shorting PP5V_S5 to...

Hi. Please help. M1 MacBook with intermittent display, but backlight stays on. The display stays on for about 1 minute and goes off. Tested with 2 other displays and same issue. External monitor works fine. PPVOUT_LCDBKLT - 43.45V after display goes off. Tested all EDP and LDDP lines in diode...