Macbook Pro 820-2915 Powers on only plugged in

Extreme

New member
Hello, I have Macbook Pro 820-2915 that it had an issue with some liquid damage which I fixed but seems that is partially fixed at the end,

The laptop is turning on if is plugged in and running fine.
If is on battery only, is trying to turn on fans are starting but the it goes of befire showing any logo..

If i power on plugged in it stays on, on battery and it also showing the battery percentage... charging etc

Any advice for me where exactly to look?
 

Extreme

New member
The area was around smc R5085 replaced and some other tracks . all where done properly, at least I think..
 

Extreme

New member
In the case that is doing the same after SMC reball could you tell me where to look? Just in case. Thanks
 

Extreme

New member
Hello, I have reball - ed the SMC everything is the same, powers on only if is plugged in, battery indicator is not showing noting, sometimes is turning on if I try few times unplugged.

The battery is good and if I turn on is showing the percentage ok and the macbook is running fine.

Any help?
 

2informaticos

Administrator
Staff member
Check resistance between pins 17/18 and 27/28 of U7000.
Also check CHGR_A/BMON levels, w/ and w/o battery connected.

Run HWMonitor and see if reports any strange voltage, or current sensor.
 
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