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I have a macbook 820-01598 which has 20v but black screen and without gong. DHU passes without error but still nothing displayed. Trackpad vibrates, capslock does not light up. I found a low resistance on L 7670 - PP5V_G3S 6ohm. Can I perform a short circuit test ?

no image, cpu gets warm no chime . Touchpad vibrates but keyboard light does not come on. Board are clean. can't turn on dfu L7410/20/30 and L3500 0v PLT_RST_L 3.3v R3090/98 are ok

Fan spins initially then stops then and does not respond to the switch. Capslock does not light up - although one time it lit up for me, but there was the same situation. Sometimes I have seen that it has a backlight. I checked the new good bios and still the same. 0v on L7410/20/30 L7210/20...

I have iMac that does not boot. The power supply gives 12v. No response to the switch. I am looking for a schematic and boardview.

Hi, I have an A1706 820-00239-A with no power. I once fixed the PM_BATLOW_L lines. UB300 and UB400 with battery: -restarts the ammeter on all USB -Now on 2 usb ports (UB300 and UB400) I have 20v. Present PP1V1_UPC. -On 3100 and 3200 I have 5v. PP1V1_UPC is missing on both. Without batteries...

I know it's an old macbook, but the customer has a fondness for it. Is it worth repairing ? Getting this error on startup.

MacBook only started up on power supply. I replaced the batteries. Now MacBook sees battery but won't charge it (0.7A) - I checked on different batteries. Sometimes it downloads 2A for a while but then drops. The power adapter is original. I did a smc reset. Two usb-c ports have 20v with...

I found a broken c7584 and replaced it. Now PPBUS_G3H - 4v U7100: 1- 0v 2 - 19,5v 3 - 5.2v 9 - 0,5v 12 - 3,4v 13 - 3,4v 15 - 0,06v 17 - 8.6v 19 - 5v 20 - 5v 27 - 19.5v L3095 - 0v L7130 - 8.5v L7520 - 0v L7560 - 0.7v L7430 - 0v L7630 - 0v L7310/20 - 0v

Hello Everyone, One of my customers brought me a macbook air A2337 , probably board number 820-02016 after contact with liquid . He was in another service. When I plugged it in I can see that it stays around 5.090V and amp goes up to between 0.09 and 0.14. And it is on a loop like this. I...

Hi. MacBook looks perfect, no water, no drop, nothing bad on motherboard. I've tried DFU, no luck (Dfu starts up but doesn't help). Processor heats up. L9060 - 2.5v L7670 - 5.1v L7690 - 3.3v L7030 - 12.6v L7400 - 1.8v L7230 - 0v, 0.3 ohm L7220 - 0v, 0.3 ohm L7210 - 0v, 0.3 ohm L8100 - 1.1v...

hi this motherboard was in contact with liquid. Everything cleaned and it works. The only problem is an error in AST 2. Voltage sensor - operating range test. I replaced the board/flex and still the same. Is this a big problem ? I turned on iStatistica - PBus Rail 0v

Looking for schematic diagram and boardview for 820-5029-A. can anyone help ?

No liquid damage, board in perfect condition. According to customer, this MacBook suddenly died on him. PPBUS_G3H 12.59v PP3V3_SUS = 3.3v PM_BATLOW_L - 1.05v PM_SLP_SUS_L - 3.31v PM_DSW_PWRGD - 3.4v PM_RSMRST_L 3.3v PM_PWRBTN_L - 3,3v UB300 CB300: 3V3_G3H: Diode-Mode: 0.331 3V3_G3H: 3.415V...

MacBook Pro A1398 stuck on Apple logo with trackpad flex. Replacing the trackpad and tape does not help. Only turns on without trackpad flex in the motherboard - J4800. I did a pram and SMC reset. Please help. PP5V_S5_CUMULUS - 5v PP3V3_TPAD_CONN 3v R4800 and R4808 are ok

Macbook 15 Pro A1708, stuck 5v. Any idea ? UB300 CB300: 3V3_G3H: Diode-Mode: 0.331 3V3_G3H: 0v, Diode Test on LDO Rails: PP3V3_UPC_TA_LDO: on CB308: 3.3v, diode-mode: 0,492 only in one USB port PP1V8_UPC_TA_LDOA: on CB306: 1.805v, diode-mode: 0,502 only in one USB port PP1V8_UPC_TA_LDOD: on...

No liquid damage. Will only turn on from the charger without batteries. Does not charge when battery is connected

Hello, I have iMac 27 5K 2019. On the startup, mac will random shut down on 1-2 second from start. After shut down is displayed only 2nd diagnostic LED. I checked other power supply, new BIOS, new processor, new RAM, resetting NVRAM, SMC, RTC battery and checking visible damage. Anyone have...

This board has: PPVRTC_G3H 3,43 SMC_PM_G2_EN 0 PP5V_S0 0 PM_BATLOW_L 0v SMC_RESET_L. 2.2 to 3.4V SMC_ADAPTER_EN 0v SMC_PM_G2_EN. 0v PPBUS_G3H 8.56v PPVRTC_G3H 3,43 PP5V_S5 0 U7100 1- 0 2 - 16.12 3 - 4.32 9 - 1.4 12 - 3.43 13 - 3.4 14 - 3.4 15 - 0.06 17 - 8.17 19 - 5.05 20 - 5, 05 27 - 16 I...

Hi I had no backlight. I replaced: U7701, d7701, f770, rebuilt XW7720 and cleaned the rest. now the backlight works but D7701 pin 1 - 6,8v pin 2 - 24v. Q7706 pin 6 - 6,75v BKL_EN 2.8v BKL_PWM 1,5V The macbook turns on from the keyboard but does not detect it after starting.

Mac is stock on 20V 0.3A. Its stuck in recovery mode in Apple configurator 2. It begins installing the system using system restore. The outputs "failed to recive message from device, might be a connection problem with usb host) [AMRestoreErrorDomain - 0x9 (9)] SLPS2R I AWAKE are present What to do ?