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  1. R

    820-01958 DFU ok but not boot

    Hi, this board clean (no liquid), I can restore in DFU the Mac and finish the restore without any error but nothing on the display. PP1V2_AWAKE 1.2V PP1V8_AWAKE 1.8V PP3V3_AWAKE 3.3v PPVDDCPU_AWAKE 0.755v PPVDDCPUSRAM_AWAKE 0.802v PP0V8_SLPS2R 0.800v PP1V8_SLPS2R 1.8v PP1V25_SLPS2R_SMC_AVREF...
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    820-01958 no DFU

    Hi, this Mac fall on the floor, no liquid spill. I have 20V 1,2A normally the Mac charge. But no chime, no display. I can't put the Mac in DFU. I measure PP1V2_AWAKE 1.2V PP1V8_AWAKE 1.8V PP3V3_AWAKE 3.3v PPVDDCPU_AWAKE 0.755v PPVDDCPUSRAM_AWAKE 0.802v PP0V8_SLPS2R 0.800v PP1V8_SLPS2R 1.8v...
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    820-00928 usb not work

    Hi, i have this board, seems clean. i have one port USB not work (bottom left). work in charge but not in usb drive, mouse work. What can I do to solve this problem? I don't understand how this port work. thanks
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    820-00875 no bluetooth

    Hi, i have this board no liquid spill with wifi work well but bluetooth, I can't activate. PP3V3_S4_WLS = 3,3V SMC_BT_PWR_EN = 3,4V AP_RESET_L= 3,28V i reball U3700 but nothing change, can I change it or other kind to check? thanks Best regards
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    820-00850 5V 230mA

    Hi, i have this board, the board work well and shutdown for always. i see liquid spill on the board, I clean it by cleaner ultrasonic. the board have 5V with 250mA, I can see in DFU mode but error in restore. i have all signal SLPSR and awake. PPBUS is OK (12,31V). I don't know why maybe T2...
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    820-00165 Board start with apple logo (half bar) and shutdown

    Hi, i have this board 820-00165 (mba 13 2017) the board start with apple logo half bar and shutdown. PPBUS and PP3V42 stay fix and good all the time. Strange thing the board start without battery (normally can't start, I think and test another mba). I try to clean me and same problem. I try in...
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    820-00292 No power

    Hi, this board with no power, no led, clean, I found a big coil (seems PP1V0_S5 is short), I can't find what component is bad. I inject 1v 3A, nothing become hot. how can I do to find without something hot? thanks Best regards Board with inductance remove
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    820-00850 liquid no display

    Hi, this board receive liquid near LVDS connector, the Mac start (I think) I have backlight on keyboard, light on usb mouse. I look defect component near U7100 (C7101,C7100,R7101,R7100 and some strap). I haven't the same board to change U7100, can I take it on 820-00239? thanks Best regards
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    820-00045 no boot stuck 20v 0A

    Hi, i have this board, no liquid spill. The Mac power start 20V 450mA and fall 0A PPBus = 8,5V All Big coil is good power. SMC_BC_ACOK = 3,3V I try to start Mac without battery, I see one time the Mac start and goes to the login windows (just power cable and display) Now nothing. What can I do...
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    820-01987 20V 0Amp

    Hi, i have this board, I can't enter in DFU mode. PPBUS_G3H = 12,31V i have all SLP2R but I have all AWAKE (PP3V3_AWAKE) is it normal? thanks Best regards
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    820-01041 20V no power

    Hi, i have this board very clean, no liquid, stop to work in use. i have the 20V on usb-c, the current is cycling between 0,029A and 0,600A and fall at 0A I try to restore but I can't see the Mac in DFU PPBUS_G3H =12,31V but fall when the current fall. Same for all: PP1V8_SLPS2R=1,78V ...
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    820-00840 20V 0Amp No PPBUS_G3H

    Hi, i have this board, very clean no liquid spill, the board have 20V usb c but 0 amp. I havent PPBUS_G3H no short, I remove F7000 PPDCIN_G3H = 20V R7020/21=1 SMC_RST_IN=0V SMC_RESET_R_L=3,3V PP3V3_G3H=3,3V I try to change U7000 & Q7030/40 but same problem. have you an idea please? thanks best...
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    820-3115 picture bad in display (internal and external)

    Hi, i have this board clean, make that on external and internal display. How can make that? Image thanks Best regards
  14. R

    820-3478 1st led, noise HDD nothing more

    Hi, i have this board 820-3478 (clean), only 1 led with iMac supply. I use an external power supply, I inject 12V on PP12V_ACDC, the current is 0,77A I think it's too much, I have U2800 is very hot, PP1V05_TBTLC=0,3V, I suspect U2800. PP3V3_TBTLC=3,3V. have you an idea?
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    820-00840 No USB charge

    Hi, i contact you for this mac, the board is very clean. The mac no charge (the tester stay black, no power) i find D3300 and D3400 short, i change it and after it work well. i think it's good but, the customer come back, D3400 is short again. i find the mac is very slow for change 5V to 20V...
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    820-4924 no green led

    Hi, i have this board very clean, no green led (PSU and official charger) I have PPBUS_G3H=12,27V PP3V42_G3H_REG=3,42V DCIN_ISOL_GATE = 6,8V PP18V5_DCIN_ISOL = 18,5V SYS_ONEWIRE=2,85V ??? R7012 = 68Kohm thanks
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    820-00165 no external display on thunderbolt

    Hi, i have this board without external display. it work well on the internal display, but my customer need to work on external display. No liquid, very clean board. i have PP3V3_TBTLC = 1,1V, where is generated this power supply, on U1900? thanks
  18. R

    820-01987 No PPBUS_G3H

    Hi, i have this board, no liquid, i try in DFU but nothing. i have input 5V 0A (usb-c tester), PPBUS=0,343V, 0,046 in diode mode PPDCIN_G3H = 5V How can i find the problem please? thanks best regards
  19. R

    820-00840 liquid spill

    hi, I'm working on an 820-00840 board now, this board have a liquid spill. i clean it with ultrasonic and change some broken component (like C3891,C3890,C3892, U3890) pp3v3_g3h: 3.4v ppbus_g3h: 13.06v all_sys_pwrgd: 3.22v pp2v9_sysclk: 3.0v pp3v1_rtc: 3.09v pm_slp_s0_l: 3.3v GTVR_FCCM: .022v USB...
  20. R

    820-01041 No boot but 20V on usb-c

    Hi, i have this board very clean, no liquid, stop to work in use. i have the 20V on usb-c, the current is cycling between 0,029A and 0,600A PPBUS_G3H =10,92V too low no? battery+power supply. PP3V3_G3H_RTC_X=3,39 PP3V3_G3H_RTC_T=3,36 PP3V3_S5 missing not short PP1V8_S5 missing not short...
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