Search results

  1. P

    820-01598 - A2159 Unable to load Mac OS

    Hi Team, I've got a 820-01598 which is showing a folder logo. Checked all SSD voltages and reset lines, all good. Understand we can't just boot from a USB installer on these T2 models. I've tried Catlina internet recovery installation, while plugged via ethernet, it allows me to select the...
  2. P

    820-00281 Camera Fault

    Hey guys, got a strange one here. Webcam works fine until a reboot and then shows that there is no camera connected. When the camera stops working we still have 5v on PP5V_S0_ALSCAM_F We’ve tested this logic board with a known good screen and same fault. Tested the screen with another logic...
  3. P

    820-00840 No Display

    This device came through for a 'FlexGate' repair however when we have checked the lcd connector J8500 we're missing all the EDP lines.. I've not yet come across a device with all the EDP lines missing so not sure if this is game over as the EDP_ML lines show value but the cpu is showing heat in...
  4. P

    820-02016 A2337 Randomly shuts down

    Hey Guys, We've got a MacBook in that the user has advised that when he puts it to sleep it sometimes completely powers down. As we've been completing some testing, we have had it on charge with the Ammeter and when we go back to check on it, the Ammeter shows 20V 0A. If we disconnect the...
  5. P

    Battery Testing

    Hey guys, Just wondering what everyone does to test Macbook battery performance? We normally will complete and pre & post discharge test with the old and new battery so we have a record of the results. We’ll put on a 10hour youtube video and keep it aside and log the drainage results. Is...
  6. P

    A2141 820-01700 Sound Fault

    Hey Guys, We've got a A2141 which had some liquid damage around U6420 and we're experiencing a weird fault with the sound. We hear the chime when the Mac boots (although it sounds like the speaker has blown but tested in another housing and still the same) and we also hear when the charger is...
  7. P

    A2337 820-02016 PPOV805_S1_VDD_FIXED shorted

    Hey guys, Just wanted to pick your brains and see if anyone has experienced this before.. We’ve had 2xA2337 MacBooks in within the last 2 weeks for screen repairs. Both came in fully functional but just had screen damage (could see image and lcd damage) Not quite sure what one of our techs is...
  8. P

    A2141 820-01700 Unable to install MacOS

    Hi Guys, We have a MacBook that had a little bit of liquid damage around U9080 and was not powering. After cleaning the board, the MacBook now boots up but displayed the question mark folder. We have since tried to restore it and reinstall the OS via internet recovery and bootable USB but we...
  9. P

    820-02016 A2337 No Backlight

    Hey Everyone, Happy New Year! We've got a A2337 which has a backlight fault. No physical damage or liquid damage. Customer said after removing a charger the screen went dark. We've assessed the board and the backlight circuit shows no short. Screen has been tested with known good board and is...
  10. P

    MacBook A1706 'Critical Update Required' 820-00239

    Hey Guys! We've got a A1706 with touchbar that is failing to update. We've tried disconnecting the touchbar, front camera, updating with a different MacOS and still the same. I read somewhere to check U4200 and U3900 in case of any minor corrosion and these are pristine. Also tested the board...
  11. P

    A2141 liquid damaged - no display

    Hey everyone, first time posting and hoping you can help.. A2141 had a small amount of liquid damage originally. It was displaying 20V but not booting correctly. We found a small amount of liquid damage on the board near U9080 & U9000. Both were removed and replaced. No shorts on the board...
Top