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Seems all the drama happened around the SMC
Corroded track on R5193/R5117/R5177/R5100 replaced and rewired broken joints
U3710 had a bad track to SMC_OOB line, rewired that
After all this was repaired, it turned on and seemed ok, so I ran it over Ultrasonic Cleaner, then 0.02A and dead...
yes tested with only bare board with SOC_DFU_FORCE pull up to 1.8V. Also in the case with disconnected audio and battery only.
There is no oxidation residue apart than U8200. But again it seems to be washed with something like aerosol can as feels oily.
Not turning on, a liquid around UF500, opposite side of U7700, underneath U5000
Corroded and knocked off R8170, replaced it.
PPVBAT_AON - 0V
PPDCIN_AON - 5,19V
PPBUS_AON - 12.9V
PP3V8_AON - 3.79V
PP5V_S2_MAIN - Jumping voltage at about 2.5V
PP1V2_AWAKE - Jumping too under 1V
I dont see any...
Thanks. I have replaced U3100 with another one still stuck at 5V 0.23A on both ports.
Still missing 1V1_LDO_BMC . Only different now under IR is that both ports seems to heat up T2 evenly, unlike before.
Looking at the bootup sequence - https://logi.wiki/index.php/CD3215_Bootup_Sequence I went...
Also want confirm if this is the expected behaviour? Could this be a cause of the system not getting detected under Apple Configurator. Maybe faulty U3100 or its circuit
This is with SOC_FORCE_DFU jumper.
When connected to the top USBc U3200
When connecte dto the bottom USBc U3100
Sorry I must have not been clear. The one with oxidation was U8200. I have taken it out and cleaned underneath as it had bad solder joint on pin1
R3091 on U3200 looked like it had a corrosion marks. I was thinking it might have leaked under U3200 and was thinking to reball. But it is slight...
Seems like it has been cleaned by another company. Slight oxidation residue around U8200 and R3091.
Measurements around CD32s seems fine. No short anywhere.
T2 seems getting slightly warm.
Tried DFU both with keyboard comb and FORCE_DFU pads to 1.8 PP1V8_SLP2SR_PMUVDDGPIO which is nearby. i...
Reballed UR500. It didn't had much underneath. Only corrosion in the area is on CR504, PP3V8_CODEC_VP side was almost gone I am assuming pins 21, 14, 7, 6 were soaked at some point.
It is still same. When I press volume up, it shows volume UP OSD then, on second press shows forbidden volume...
Replaced UR630 as balls underneath were completely corroded. Now Audio gets recognised for a second and disappears in the Audio Output secttings.
Bluetooth audio works.
Its strange, when i press the volume up/down it moves the volume bar now (before would just shows a forbidden audio sign) but...
Thinkpad X13 Gen 3 Not Charging via Thunderbolt after an update. Ran out of battery and stays at 5V Fan spins for a second when it switches on, but then the power button blinks 2 times and goes off. Dont have a fully charged battery to charge and flash over Windows. Although the TBT Utility...
Are you aware if this model needs a battery to turn on?
I managed to FORCE_DFU and revived the system. While it is connected to power I managed to load the system, it shows the battery needs service but charging. Pulling 2A charging current. But the minute I disconnect the charger it shuts down...