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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...
I update some precisions.
i have default picture on display when "shutdown", just on the screen, fan work again, backlight present.
i see PPVCC_S0_CPU= 1,3V in this case.
Thanks
Hi,
ok for boot without battery, but when not boot, is not normal? (the other Mac is bad?)
I try Monday, the good bios. I try with new ssd, usb boot, without left io board, without trackpad and keyboard, same shutdown.
I can install the System on the ssd but not boot on complete system.
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...
sorry I forget a word I have all awake except PP3V3_AWAKE.
PP3V3_AWAKE is It necessary to enter in DFU?
liquid (near U6903) I reball U6903 seems good
thanks
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 ...
ok i remove D6950 the SDA line come back to 0,419V in diode mode.
I change the diode, all is normal but when I charge the battery, the SDA line come back with the problem issue.
if I stay without D6950, the Mac work well.
edit:
the Mac stop to charge after 2min, the SDA line has a problem...