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Hi, this machine came in dead, with 5v on both port, consuming about 30-40ma pp3v3_g3h is fine ppbus not shorted smc_reset_l 3.4v buf_smc_reset_l 3.4v Both of the cd3215 missing pp1v1 ldo, cd3215 has been replaced with KNOWN GOOD chip, still the same. any pointer ?

so both of the port, usb 3 doesnt work ( external hard drive for example ), but there's power as the hard drive is spinning. usb 2 device like mouse and keyboard work. charging is fine on both port too. used known good charging port, same story. diode mode on usb3 line r3012 : 0.363, both side...

hi, this macbook came in with some backlight damage, fixed that. Found out j4600 usb port has some problem. It will detect hard drive fine, but if pluged with mouse or wireless mouse receiver, or any small powered usb,it doesnt work. The other usb port is working fine. There's 5v on each side...

Hi.. this macbook came in, owner say it suddenly die. When plugged with usb c ( 96w original magsafe ), it will go from 5v to 20v, then consume20-40ma, back to 0a repeatedly. ( all port behave the same ) measured : Ppbus : 12.6v steady pp3v3_g3h : 3.3v steady pp5v_s5 : 5v - 0v cycling pp3v3_s5 ...

this mac came dead, previously worked on other store, replace u7000 cause its ugly as f, with blown r7021, r7022, and r7025 out of value, r7001 out of value, all replaced, value good.| now mac will turn on, see battery, can charge the battery. but unplugging magsafe will shutdown the mac. but...

hi, this came in with iquid damage at u3200 and u3100 area.. i replaced both u3200 and u3100, now board will turn on, run off battery, but not charging at all port. i measure that ub300 and ub400 got pp1v1 when plugged in to their corresponding port, but u3100 and u3200 doesnt get any pp1v1 at...

hi, this board came in with a bit of liquid damage at ub400 and ub300, both of these corresponding port will stay on, while the other two looping. i replaced both ub400 and ub300, and i got 20v on all port now. i tested it in chassis and it did boot. i leave it one day, and next day it doesnt...

hi, this board came in with a bit of liquid damge at smc and y5010. smc and y5010 has been replaced. the problem is no post, usb activity is missing, fan will spin faster and then died, and start again ( loop ). if ram is removed, board stay on, theres a beep sound every 3 second. tested with...

hi, this mac came in stuck at apple logo screen. sparepart problem has been eliminated, its logicboard problem. u6100 looks like its have been replaced by previous tech, but im not sure about the bios file they use. the google drive link you share for this 820-3024 at other post is dead now...

this device got liquid damaged, shorted ppvin_p3v3hrtc_r, replacing u6903 relieve the short. both port is 5v loop but mac turn on withbattery. but usb c cannot be used to charge or detect usb drive. i notice, if battery is connected. one port will have 5v 0amp, while the other port wont even...

this board came in with classic c9560 problem ( crashing intermittently ). after c9560 problem, customer came a few weeks later with not going to sleep when closing the lid problem. smc_lid is 3.4v. using another known good logicboard in the case, the sleep work, so we can discard part problem...

hi, this board came in, not waking up from sleep. if i sleep the mac without closing the lid ( from apple logo top left corner, sleep ) , i can wake it from sleep. but if i close the lid, opening the lid wont wake up the mac. when screen is on, smc_lid 3.3v smc_lid_r 3.3v smc_lid_left 3.3v...

hi, this board came in with mild liquid damage around u5510. its quarter fan spinning. even after clean and replace u5510 still quarter spinning. then with thermal cam i found that pp3v3_s5 is shorted at u6100. removing u6100 relieve the short. anyone have the bios clean file for this board ...

this board came in. customer say its been dropped. board looks clean. when plugged to charger, its taking only 5v 0 amp. ppbus is shorted at c9081 ( im using 820-01598boardview ). now its 5v and cycling from 0 to 250amp. but only one port will restart. the other board also cycling amp...

hi, this board came in with intermittent green light. ppbus is 12.6v solid. pp3v42 : 3.42v i notice that I dont have smc bc acok when the green light is out. I change isl, and then i got a fairly consistent green light. when magsafe is plugged in, i got fan spin. but theres no usb activity ( no...

hi, this board came in with corrosion on the ram, i reball the ram, and macbook work good, for 1 day. fan will spin, but vcore is 0v, cpu is not heating up too ( normal ), all_Sys_pwrgd is 0v. then i measure that pp1v8_s3 is 3.3v. pp1v2_S3 is 1.2v ( normal). I am sure the ram i reball is good...

hi, this board came in dead at 5v 0amp, a bit of water dmg around u9080 i see that pp3v3_G3h is shorted at u9080, removing u9080, and i got 20v and a bit of fluctuating amp. i see that pp2v5 is shorted to ground 0 ohm. I inject 1v and found U8800 is heating up. removing u8800 and short pp2v5 is...

hi, this came in, clean. ppbus is 12.2v pp3v42 is 3.3v but theres no green light. I have used my known good smc in the customer board, but still no green light. then i saw smc_bc_acok is 0.5v. r5087 is good, i have replaced it too. u5110 has been replaced. diode mode of smbus_smc_bsa_scl and sda...

hi, as the title say, theres no camera detected, i have narrowed down the problem to logicboard my known good logicboard can detect the camera inside customer chassis. usb_camera_n and p diode mode is same at 0.411 i dont see another line for camera, is the mcp fucked?

hi, this board came in, with problem not charging, board run off battery and detect the battery. ppbus is 12.2v. isl is a bit botched, so i replace it. i replaced smc, still the same. i tried the previous smc to another working board. i have 12.6v ppbus. i diode mode pad under smc and found...