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i have this imac with only one led1
i find some component broken like R5335, U5420, U9720 (when i remove this last PP5V_S0 in diode mode 0,020 became 0,250)
for the last i can't find the reference REF3333, is not the reference i think.
i would like to find in other board but when i search...
thanks for schematic and boardview.
yes all 4 ports stay at 5V.
i check in diode LDO output and post after.
U3200 is hot when connect on all ports. if i need to change, can i take on another board, i haven't this board to pick this component.
Hi, i have this board 820-00850, the issue the usb-c input stay at 5V (0,200A->0,400A).
i have PPBUS at 12,3V but cycling (9V to 12,3V)
i haven't the board file, i use the board file to 820-01041 but it's not same.
have you this file board? what can i check to same my problem?
i have this chip...
i check all SPI resistors seems all good and trace too.
I check with scope all the signals on U6100, all signal communicate but not on pin 3 & 7. is it normal?
i change the bios with good bios same problem and i clean me of the original with cmizapper same.
R7402 = 150K
L7330 = 1,5V and fall
L7260 = 5V and fall
L7220 = 3V3 always
L7630 = 1V and fall
L7100 =1V and fall
L7550 = nothing
L7510 = nothing
L7520 = nothing
SMC Bypass not work, same problem turn fan normally and shutdown
i have this board liquid spill near SMC. I put the board in a ultra sonic cleaner, now i clean but can start, just fan and stop.
i change the SMC, U7000 (because PPBUS_G3H is low 12,26, now 12,57). i try the board with original charger 85W.
I have the all_SYS_PWGD=3,34V just few seconds and...
i test with an another original battery of another macbook pro same year.
I have a kernel panic when i run heaven on battery (the level of battery is not important) i have the problem at 75%.
When i run heaven in power supply no problem. when the problem come, the screen become black and i have...
this board receive liquid, not work. the USB C connector JB5000 is burn, i remove it and the board start and work well on the other USBC port. but if i unplug the board, the mac work well above 60% of battery.
when the battery is low, I have PPBUS_G3H at 11V, is it normal? with power supply...
sorry for the long reply.
i have try to change all flex and trackpad/battery, i have always the same problem.
The mac is very very slow.
i look the board seems clean but something it's wrong on this board.