820-00165-A A1466 2015

[lincev]

yes this is good 21,2 ohms But if I put it in diode mode I have continuity between its pins and I have checked with another board and that should not happen

 

[2informaticos]

Pins 27/28 are connected through mentioned resistors.
If you disconnect any of R7121/22 shouldn't have conntinuity.

 

[lincev]

remove r7121/22 and solved

If I put in just one, everything is fine, but if I put in two, I have continuity again (resistance in good condition from other logic boards)

 

[2informaticos]

Put back the resistors.
Be sure to get correct ohm values between pins 17/18 and 27/28.

 

[lincev]

ok now I have :

pins 17/18=04.9 (scale 200)

pins 27/28=20.6 (scale 200)

i have continuity pins 27/28

It turns on, battery connected but when I disconnect MagSafe it turns off. Battery charges and percentage appears

 

[2informaticos]

Check battery connector's pins.
Few times I found them broken in the middle.

 

[lincev]

I check this but connector is perfect!

any ideas? thanks

 

[2informaticos]

PPBUS_G3H voltage with battery alone (when turns off)?

Just in case, test making a short over R6950.

 

[lincev]

I have done tests with the short in R6950 but its behavior has not changed

It stays on for a while sometimes for 5min voltage 8.05v when it turns off 8.15v

I have also noticed that when it fails despite having the battery connected it also turns on automatically when connecting the magsafe

It has been working for 10min false positive I turn off, disconnect the battery, reconnect the battery, connect magsafe and when disconnecting it turns off. If I leave magsafe connected for a while it turns on again and leave it for 1min and it stays on...

 

[2informaticos]

Try changing SMC...