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L5001 is corroded, that give 3.24V to SMC, there was no connection to C5001, i fixed it with a cable but still same, to measue if connects to under the smc i hav eto remove again the SMC.....
yeah, in SMC bypass mode it turns on and there is picture
i will try to leave it overnight in full alcohol, maybe it can remove some crap under the smc, if that wont work i will reball it it, and have some donor board to replace SMC if needed to
thx!
was bit water damage around smc R5180 R5179 replaced, it was working for few days, now came back
-ultrasonic done, looks good actually
-green light is ok on cgarger
-fan spins once then dies
-r7121 r7122 are ok 10ohm, that area is not water damaged
- i can do smc reset
-it powers on on for a...
so my u1900 is not giving 3.3V on the leg 1, so the crystals are not working? the leg 1 was corroded, i removed it, pad cleaned, chip replaced, but still no 3.3
in the meantime i found another good board, the measurement for this
u7501
1
5.5
2
5.1
3
1.25
4
3.33
5
0
6
1.996
7
0
8
0
9
0
10
1.996
11
0
12
3.4
13
1.996...
i replaced u7501 (new chip)and u1900 (from donor board), there is green light, i can do SMC reset
-the board takes 0.380A when i connect the charger, than that goes back to 0.200A and stays there
i see no water else where, only on those 2 chips, and some resistors around, i replaced all of...
the single usb-c port was water damaged, water did not go further inside, even the cable connecting to is not corroded, i replaced the usb connector, now everything works fine but the usb communication, its dis charging fine
when i connect a usb-c stick, which is very low consumption , i get a...
yes, i have a good test hdd, just used in another macbook, and i replaced the hdd cable
from usb it actually stuck halfway, on internal hdd it keeps restarting after about 1min of loading, and the line would reach abuot half way
was slightly water damaged in the middle area on the board, not that bad, it was turning on when it arrived here
- than i put it in ultrasonic
-did not turn on
-after measuring around, seemed basically , so i reflowed the SMC, than it turn on again now,
-i can do SMC reset, nvram reset, there...