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Hi,
i have this Mac board 820-1700, the board work well on battery with a genuine battery but not original.
No liquid spill, the customer say, Mac don't use since 2019 when he want to use now not work. I try 2 original battery (come by apple with top case). I restore the Mac in DFU same...
Hi,
i have this board liquid spill U7800 is short on signal PP3V3_G3H_SOCPMU.
i remove the component short is remove, but is in the component.
Can I change it to keep on donor board?
thanks
Best regards
Hi,
this board 820-00850 is lock to 5V 36ma (no liquid spill, no DFU).
i have PPBUS = 12,29V, PP3V3_G3H = 2,5V to 3,3V no fix.
i inspect the board in microscope, I don't see a short.
Big coil seems ok except L7270= 0,010 & L8102=0,065 in diode mode
can you help me please?
thanks
Hi,
on this board, I get 20v 0A and ppbus_g3h 1V with no short (diode mode 0,250)
At U7000
Aux_det 5v
R7020/21/61/62 are ok
TBA_HPWR_EN_L 3.4V
PM_EN_P3V3_G3H 5V
SMC_RESET_R_L / SMC_RESET_R 3.4V
SMC_CHGR_INT_L 3.4V
CHGR_ACOK 3,3V
SMC_RST_IN 0V
PD_SMC_CBC_ON 0V
R7075 is 5ohms and TBA_VDDA is 5V...
Hi,
i have this board 820-3662 who don't want to boot, I change already because U7190 is short (hole black on the component), I change too U7100, R7101.
Now I have PPBUS_G3H, Clean board, no liquid.
PP3v3_S5 and PP5v_S5 are present.
Missing PM_SLP_S5_L and SMC_S4_WAKESRC_EN which are required to...
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...
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...
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
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
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...
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...
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
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
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...
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
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 ...
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...
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?
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...