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bit of a backstory on this computer.
computer had light liquid on keyboard. Ordered and tested keyboard replacement, no liquid contact was found on board or drive.
computer comes back a couple of days later with blown component on ssd. Looked over board again, made sure that ssd was getting...
This board did have liquid contact. Plenty of corrosion along the hinge edge of the board.
replaced q5480 and repaired a trace between. pin 4 and pin 1 of r5481
also repaired trace between r3896 and c3888
replaced f9700.
Not sure where to look.
Hoping it isn't an smc issue
probelm...
pp3v42_g3h 3.48v
3v3s4 3.34v
smc_onoff_L 3.48v
i have replaced this customers keyboard 2 times,
there was liquid contact previously, but after cleaning, everything seemed in order.
all keys work, with the exception of the power button.
a test keyboard does work.
i can power on and off the...
This computer had external contact with liquid on the thunderbolt jacks.
no visible contact on top or bottom of board, nothing looks crusty.
The computer does boot up, and chimes, does boot to os and has very distorted display, similar to what you would see with bad ram/cpu/graphics card...
I have been fussing with this one, for a bit.
2 replacment batteries,
flashed bios.
known good power adapter.
On boot the bios indicates that the battery has experienced failure.
in windows the battery shows very little info in battinfoview, but windows reports it at 100% charge.
will not...
I have a quanta motherboard, computer powers on, and everything seems to be working except for the back-light.
backlight out on the lvds connector is 18.6v with or without lcd attached. no short to ground from connector.
I am assuming that the led driver is not working correctly or something...
Computer has had previous liquid damage.
does work fine on battery.
green has a dim flash about once a second
PPDCIN_S5_CHGR pulses from 0v to 18v
ppbus_g3_h also pulses from 0 to 18v
have replaced isl, q7085 and q7080
no short to ground on ppdcin_s5_chgr
i don't know where to look on this guy...
I have a liquid damaged 820-00164-a board here
computer boots, does not charge battery.
no green/orange light
was not booting, cleaned up r7005 area where there was corrosion, also corrosion near f7140
f7140 showing .3ohms may be hardware resolution
ppdcin_g3h_chgr 14.8v
ppdcin no short to...
This board shows no obvious liquid damage.
Hard drive was replaced by ssd.
Running new os install.
asd showed 2 errors Error 28 mux switching failed and battery not sealed
customer previously replaced battery with generic battery, I do not have a genuine test battery for this macbook.
Running...
820-3476-a
very light blue corrosion around probe 106 area under the hard drive but does not look like direct water damge.
PPBUS_G3H 12.56v
PPBUS_S5_HS_COMPUTING 12.56v
PPBUS_S5_HS_OTHER5V 12.56v
PPBUS_S5_HS_OTHER3V3 12.56v
PPDCIN_G3H_ISOL 16.16v
PPDCIN_G3H 15.9v
PP3V42_G3H 3.425v
PPVRTC_G3H...
Possible liquid damage but has been ultrasonically cleaned before i took a look at it.
works normally when running on the battery
when the green light finally does come on it charges completely fine and operates normally.
when battery is connected. battery has to be removed and let sit before...
computer had liquid damage
works completely fine on battery but will not power on with charger, will not charge battery
I don't see any obvious corrosion points and have finished an ultrasonic on the machine.
I am at a loss of what to check. I know the PP18V5_DCIN is very low but cant find...