820-3662 battery only charges when off

[2informaticos]

Test again with PSU, or fake charger.

 

[Palhano]

with PSU works.

That's the smallest problem, I'm trying to solve the BKL problem. Continue to stop when it goes to sleep or turns off and on.

Trying to buy the U7701 and U7750 to test.

 

[2informaticos]

Both problems may be related.
Make the machine works with original Magsafe 2 charger first.

 

[Palhano]

Friend, thanks for the attention so far. I ordered the components and I'm waiting for them to arrive.

 

[Palhano]

I received the new Q7180, the problem remains.

With PSU the Mac recognizes the charger. With the original, it only recognizes with mac turned off.

Any tips?

 

[2informaticos]

Post now U7100 voltages; pins 1, 2, 3, 9, 12, 13, 14, 15, 17, 19, 20, 27.
When the charger is not recognized...

 

[Palhano]

I'm back to mac work.

Checked pin voltages, no battery connected.
1: 0
2: 20v
3: 4.5v
9:0
12: 3.3v
13: 3v
14: 2.27v
15:0
17: 12.56v
19: 5.45v
20: 5.45v
27: 0

 

[2informaticos]

"27: 0"
Are you sure?
If yes, check R7121/22 and their traces.

 

[Palhano]

Sorry, I was wrong.

Pin 27: 19.76v

 

[2informaticos]

Was these voltages taken when the charger is not recognized?

 

[Palhano]

Recognized! I will try to simulate the problem off the board.

normally stops recognizing with the system turned on and battery connected.

 

[2informaticos]

Take the voltages at that time.
What do you expect to find, if charger is recognized?

 

[Palhano]

I noticed that the logic doesn't present the problem when it's alone, only with the battery and SSD.

I was testing putting it in the topcase and connecting the other items. It seems like when I plug in the trackpad, that's when the problem happens. Tried with another trackpad, and same problem. I'm checking it out!

 

[Palhano]

Crazy logic!!! After being well without the trackpad for hours, now it's back to the problem. I will try to measure the voltage of the U7100 when I am having the problem.