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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...

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...

Hi Ronaldo, Did you have any luck in replacing the Wifi chip? I have one with the same line shorted PP3V3_S2_WLBT_ISNS which is coming from the IC. Have tried to replace the chip but it doesn't seem to work. Just wondering if there is a possible repair. Thanks!

Checked also in Ohms and value is good. We will try the DFU revive

BKLT_SCL/SDA both 5.1V RP850 - 0.512 RP851 - 0.512 RP852 - 0.239 RP853 - 0.239 UD050 and corresponding components all test good against the known working board

100% image present. DP_INT_HPD_3V3_CONN value shows 1.16V DP800 shows normal diode value 0.873/1.1163 but no voltage

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...

Just to update that we replaced U3900 and the MacBook now boots up fine and touch bar works. Thank you for your help!

I've checked the resistors around U3900 and all are showing correct value - tested against known working board. no signs of any missing components

The Macbook was still in setup mode when we received it so we couldn't complete our normal diagnostics. Touch bar was not showing any activity during this stage (which is normal I believe). Flex gate was completed without removing the full screen or logic board. I'll check the resistors and...

Apologies - the board number is 820-00239. When we received it in the client just said it kept freezing and they were having trouble with the software reinstallation. Also the display had classic 'flex-gate' issues which we have repaired. No signs of liquid damage or any previous repairs.

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...

Thank you, we really appreciate your help with this one. We have deemed it as a non repair. We will definitely apply your advice for the future no display repairs!

As we're still missing the DP_INT_HPD_R, DP_INT_EG_HPD & DP_INT_IG_HPD signal, in your experience would this now be deemed as unrepairable?

Sorry for the late reply. Replaced both U9801 & U9850 with known goods and still no internal display

Sorry would you mind explaining the first part of your reply about U9801/50? Diode mode to ground on DP_INT_HPD gives: 0.491 w/ LCD connected 0.547 w/o LCD connected

Tested with a known good screen assembly and we have PP3V3_S0SW_LCD and PP5V_S0SW_LCD DP_INT_HPD remains at 0V EDP_INT_AUX_P = 0.419 EDP_INT_AUX_N = 0.421

Thanks for your reply! I have 0V on DP_INT_HPD and 0V on EDP_INT_AUX_N I've checked diode mode of J8500 EDP lines and compared against known good board and they are giving good value.

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...