Search results

CPU VCORE pulses too and also PLT_RESET_L

Rebelling the SMC did nothing different to this board. Same thing, still pulsing S0

In SMC bypass, it does a quarter fan spin and dies. Will try reballing it

Solved replacing Q3501

Got this board here which had no power. PP3V3_SUS was low, only 0.45V. I found corrosion under U8020, so I replaced it and got back PP3V3_SUS to normal. Now the board pulses all S0 rails in loop but does not turn on. I inspected whole board and could not find any more corrosion in it. Any ideas?

Got this board here. Left USB ports were working only for charging but not for data. They would not send power to USB devices, so I replaced U3500 and it started overheating USB devices connected to any port and would not mount them, so I replaced U3500 again, still same issue, it even burned an...

C5626 was a little corroded and that's why it was having quarter fan. Solved

Got this board here completely dead with a little corrosion around C5010, which mad the trace between it and the pad passing through SMC to evaporate. I ran a wire to rebuild the trace and now the board has green light but only quarter fan and dies, no loop, just a single spin and dies until I...

Headshot haha. Problem solved! Thanks again. For what I understood, this mosfet commutes between S0 and S3 state right?

Got this board with really strange issue. It runs normally, works everything, except when I put it to sleep. When the machine enters sleep state fan goes full blast and stays like that until I wake it up. When machine wakes, everything goes back to normal, fan goes back to normal RPM and system...

U3500 was bad! I was not getting 5V on L3500. Thanks for the help!

Hello. Got this board here. It turns on, charges battery, works perfectly except for left USB ports. They can charge battery via USB-C but no USB devices get detected on them, not even get power from USB on USB mouse or any other device. The board had corrosion near U3500/5850/3906 which I...

Hello. Got this board here with 3v3_s5 stuck at 0.6V. There's no short on that line. Already replaced U7501, C7564, C7588, Q7560. Still same. Any ideas on what the problem could be?

This board came with no power. Stuck at 5V. After inspection I discovered the 2 left USB-C ports keep resetting the charger. After some measurements I found that PP1V8_UPC_XA_LDOD is giving around 3V instead of expected 1.8V. I then replaced U3100 as it's the component that generates this...

Yes, I'm aware of that. Unfortunately for the costumer, only a replacement board will solve this now.

Well. I got some more boards here from the same model and ALL of them have the same heating behavior when charging. And I noticed that it's on all ports. I think this is an expected behavior and not a problem.

Ok, another one to the pile of trash then. Thx!

All voltages present except those I told and L7702 and LB700 which are getting 0V. Don't have a good board of same model to compare diode readings.

UB300 was getting 5V 0A, replaced it and got 20V back. Board tries to start but I have no VCORE. DFU completed now, but still no VCORE. I have 0V on L7210/20/7410/20/30

Hello! Got this one from another shop here and it was missing U3100. I placed it again and had to run a little jumper to establish connection between R3109 and PIN 37 of U3100. Board pulls 5V and 0.25A from charger but won't negotiate 20V. I have 12.24V on PPBUS_G3H and T2 gets a little warm...