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Hello having a problem with 820-01700-05 from 2019 16" macbook pro unknown history the machine is powering on (chimes) probably to login screen (double clicking the power button activates the voice over option).. the backlight seems to be on but no image on display and also not on external...

Hello working on a board 820-01814-a from a1990 machine. the mac is dead, does not charge or power on.. while checking with usb c measuring tool on the charger it is drawing 5.17V and 0.01A took out the logicboard, looks very clean, missing PPbus_G3H and also missing every other power rail...

hi working on a liquid damaged 820-3662-a the board powers on and chime sounds again and again also, after smc reset or pram reset back to chime in loop... liquid damaged around d2920 c8300 looks also burned.. also around c8051 and r8052 haven't replaced anything yet.. anything worth to...

hello 820-3787-a stuck at halfway loading bar no liquid damage can't find damage under the microscope.. when i try recovery mode also doesn't load to the recovery, but stuck with the apple logo and halfway loading bar... also without the ssd... seems like doesn't detect the ssd, but could be...

hello working on a 820-4924 board is very clean, no liquid damage.. keyboard does not work tried it on a different case with good known keyboard \ trackpad and all good cables - still doesn't work.. with external keyboard works fine.. the keyboard does work when clicking the power button...

hello i'm working on a 820-00045 the board looks pretty much ok no liquid damage, doesn't seem like been tampered with before but still, no power... from reading around the board, i get this results.. On F4700 is 5.17v on both sides PP3V3R3V0_AON is 3.3v PP5V_S0 is 0v PP3V3_S0 is 0.020v...

hello i have a problem with the 820-00138-a mid 2015 retina 15'' model... the board seem to be working, screen power on the apple on the back is light up both fans are spinning, but no chime or reaction to keyboard.. also no image at hdmi.. i want to do some diagnose and tried to get...

hi there 820-00045 no visible water damaged, unknow history does look like been worked before on some areas. the little blue led right to the battery connector is glowing but no image or chime, PP5V_S0 is missing, also obviously. no cpu vcore... ppbus_g3h is 8.6v PPVIN_G3H_P3V3G3H is...

hi anyone familiar with this ultrasonic? i got this one from a storage clean out.. seems to be working well, but only has a button for heat and button for on\off should it be safe to use on macbook logicboard with cleaning solution? on the back it says 50\60hz cycles volts 220 and amp 1.5...

hello working on a 820-3332-a logic board looks very clean, no liquid damage, under the microscope couldn’t find anything that looks bad… the board is dead, no light on the charger.. on F6905 i get around 16.73v on each side ppbus_g3h is 3.295v PP3V42_G3H is 3.393v resistance to ground...

hello working on a a1543 820-00045 logicboard no liquid damage anywhere inside the machine when connected to charger does not power on, no response to keyboard trackpad is putting out force touch feedback when connected to the charger but no other sign of life.. pulled out the logicboard and...

hello working on a liquid damaged 820-3476 a1502 board get a light on the charger and the fan is spinning. the fan is starting normally and after a few seconds increase speed almost to full speed... the board has cpu vcore 1.8v and usb mouse light up the liquid was around the dcin connector...

hello having a strange thing with a 820-4924 (diffrent one from the one solved a few days ago) after liquid damage, had a hard short to ground on PPBUS_G3H the short to ground was solved by replacing the two mosfets - Q7310 and Q7320 from a donor board.. now i get 12.54v on PPBUS_G3H. still...

Hello there friends... working on a 820-4924 liquid damaged board got it cleaned so no visible signs on corrosion.. measuring around the board, appears to be getting 1.04v on pp5v_s0 s3 and s5 are there reading 5.10v looking at u8080 is getting the input on pin 3 from s3 (5.10v) but the en...