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  1. Rlab

    820-00687 clean ME BIOS image required

    Hi guys, I got this 12 inch 2017 macbook with a totally destroyed BIOS chip... so I cannot read it and therefor cant flash it in a new chip.. I found some .bin files for this motherboard on the internet but unfortunately they are not working... Any help will be much appreciated Thanks !
  2. Rlab

    820-00850 PP1V1_LDO missing in two CD chips

    Hi guys, I'm working on a MB that came with a partial short an corrosion on CB300 and CB308 and had also a burned L8504. Once CB300 & 308 were replace, PP3V3_G3H_RTC & PP3V3_UPC_TA_LDO came back but PP1V1_LDO is missing in UB300 & UB400 (PP1V8_LDO X2 are present) Both CD chips (UB300/400) have...
  3. Rlab

    820-00850 5V DCIN all LDOs present

    Hi guys, I got this mac with a little water damage in the QB631 area and RB641 & RB631 were replaced. I have 20v in DCIN only with the battery connected but it does not turn on. without the battery DCIN has 5V and all LDOs are present. checking without battery i have: PPBUS_G3H 12.28 V...
  4. Rlab

    820-01700 Touch bar not working

    Hi guys, Im working on a MBpro 16" that had a little water damage around L5199 the rest of the board is clean. L5199 was replaced but still the touch bar is not working (also tried a new one), i have BKL in the keyboard, and: SPI_DFR_MISO_R 0.078 V DFR_TOUCH_INT_L 0.080 V DFR_LID_OPEN_L 0 V...
  5. Rlab

    820-01041 PP20V_ stuck at 5V all LDOs present

    Hi guys this A1990 arrived with the right hub burned. U3200 and U3100 were replace since they were not generating PP1V1_ LDO. now all LDOs are present but still have 5V steady in all hubs. PPBUS_G3H 12.23V PP3V3_G3H_RTC_X 3.37V PP5V_G3S & P5VG3S_VSW 0V PMU_ONOFF_L 3.37v PM_RSMRST_L &...
  6. Rlab

    820-00928 External USB mouse & keyboard not working

    Hi guys, I'm working on a Macbook pro 15 inch 2017 A1707 that fully works but external USB mouse and keyboard. all the USB-C ports work, charging, Hard Disk & HDMI. We have tried safe mode, external HD with different OS versions & different USB-C original adapters. Magic mouse works fine as well...
  7. Rlab

    820-00928 20V only charger, shows low battery on screen

    Hi, this is my 1st post ! This 2017 macbook pro 15" shows low battery icon on screen powered only with the charger in all 4 tipe-C ports. With the charger + battery, PP20V_USBC_ is pulsing from 5V to 0V on 3 ports, the port managed by UB400 gets 20V and shows apple logo for 2sec and then turns...
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