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got this device with a strange problem. connecting batterie, open lid, connecting power . 20V, amper is rising up until about 2.8A then it switches to 19.8V like always, display backlight is coming up and that is all ! i checked the whole board no water damage to see or any other strange...

Hi got this device, not working, found a short in the mainboard near usb. replaced this all working fine. Checked everything, all good. toke the display off and install the glue stripes. put display back without gluing for last test and... no backlight! checked connector get 69V and with...

hi got this device. seems to work all ok. by pressing power button holding down the alt key left or right it starts in osx dont possible to select a start-drive. external keyboard it is possible so i realized in the screen to select start drive that keyboard and trackpad dont work. now the...

Hello, I installed new Big Sur on this machine to get the newest EFI then I replaced the RAM to 16GB and replaced the Timings in the EFI Now I installed on custom SSD Big Sur and the EFI is rewritten by installation. Of course the machine dont work now with the wrong RAM timings. My question...

need some help here no liquid spill to see, board looks clean and nice PPBUS_G3H 12.52V PP3V42_G3H 3.42V PPVRTC_G3H 3.39V SYSCLK_CLK32K_RTC nice Wave 32.89 Khz PP5V_S5 5.03V PP3v3_S5 3.34V 3V3_SUS 3.3V PM_BATLOW_L 3.32V SMC_PM_G2_ENABLE = 3.42V SMC_ADAPTER_EN =3.40 V...

no DFU mode, was liquid spill, cleaned already PPBUS_G3H = 12.25V PP3V3_UPC-XB_LDO = 3.3V PP1V8_UPC_XB_LDOA = 1.8V PP1V8_UPC_XB_LDOD = 1.8V PP1V1_UPC_XB_LDO_BMC = 0V PP3V3_GrH_RTC = 0V PPVIN_G3H_P3V3G3HRTC = 12.57V CHGR_EN_MVR = 0V desoldered R6960 R6960 pin 1 has in diode...

Hi got this board without any signs of liquid damage, looks nice. one port working 5V, 0,358A stable (U3200) other port 5V 0,535A about 30seconds and restarts looping (U3100) I have power in port (U3200) PP3V3_G3H_RTC 3.3V PP3V3_UPC_XB_LDO 3.3V PP1V1_UPC_XB_LDO_BMC 0V R3450 1.68V both...

Hello, I want to flash an EFI ,clear me, for a 2015 820-00165 (SN C17QL0YFG940) From the serial it is a 7,2 but here https://github.com/gdbinit/firmware_vault/tree/master/EFI/MacBookAir I can find only repos until 7,1 So what is here to do? for a hint i would be thankfull

Hi, got this device, there was a liquid spill on the Keyboard connector and a short, so I had to remove the connector and scratch 2 holes in to the board until the short was gone Now I have 20V and 0.000A. I found in the net that probably T2 not talking to the PMU correctly. PP3V3_G3H_SOCPMU...

I got an A2779 which has a black display. External monitor works. I connected a working display that works fine. of course it has the ghost problem. So I thought the display was defective. I ordered two displaypanels then I disassembled a display of this series for the first time and replaced...

is this anyhow possible without Paralells? thanks a lot

got this A2338 with the exclamation mark after the start So i forced it in to the DFU mode 1. download system ok 2. copy ok 3. extrract ok 4. install ok and ends in error tryed rvieve and restore but in the end got Error 2006 0x7d6 (failed to restore device in recovery mode) the cable is a...

hi got this device with liquid damage. first accu was not good, with other one it turned on but dont recogniced the charger after that i found liquid damage around U5200 and around F5200 i cleaned that up, found i2c_smc_pwr_3V3_scl had to high value in diode mode, replaced UD201, then scl and...

Hi, i wanted to uügrade this imac but there faces me some problems. 1. upgrade from i5 CPU to i7 4.0Ghz (4790K) insert the i7 there i have only 1. and 2nd led after a wilhle second turns off and first is only on then second turns on again and so on, no dong, nothing insertet the i5 all is...

Hi, got this imac with now signs of life, no led nothing, replaced with a known good power unit, nothing. found short in PP12V_ACDC pin 3 and 4 J6900 figured out, that Q8450 is blown, replaced it and the short is gone now already the first LED is coming up but after pressing power the LED turns...

Hi, i want to upgrade the ram here. found in the schematics RAMCFG 3..2 and 1..0 but wich resistors ? without boardview that will be a problem. can someone help me ? i have Hynix 4GB RAM Moduls So that will be 100K to R2291 and 10K to R2284,R2282, R2280 and to pull out in R2292, R2290, R2294...

Hi, just this device came in 20V draw with batterie no dong, no display checked the power sequenz from repair wiki https://repair.wiki/w/A2141_2019_16%22_MacBook_Pro PMU_CLK32K_PCH is ok PMU_ACTIVE_READY is 1.8V PMU_ONOF_L is 3.3V PP3V3_S5, PP1V8_S5 is 0V R8013 Pin1 has a nice sinus wave...

i have the 820-00165 4GB version and want it upgrade to 16gb so i bought 4x SEC K4E6E304EE-EGCE and soldered it in then i soldered the RAM straps like ino datasheet DDR3:SAMSUNG_16GB CFG0: L CFG1: H CFG2: L CFG3: H that worked but coming apple and during loading 30% it is turning off then i...

i have an A2338 and by replacing the Display with another one I bought the TrueTone Option in the Display Menu is missing. Is there any way to copy a serial from the origianl display or like that in to the other display to make this work again?

got this unit with high fan spin. found bad battery. after replacement fan is ok. when i click on the sleep mode, the device goes into sleep mode and wakes up again normally. but when i close the lid it also goes into sleep mode, but after opening it, the display remains dark. i have already...