a1278 board 820-2936-b doesn't charge

[dellxps15]

Re: a1278 board 820-2936-b doesn't charge

post voltage on battery connector pins.

[angel-boy]

Re: a1278 board 820-2936-b doesn't charge

measure between

pin 1, 2, 3 ( positive ) with pin 4,5 ( negative ) = 11.80v
pin 1,2,3 ( positive ) with pin 6 ( negative ) = 8.60
pin 1,2,3, ( positive ) with pin 7,8,9 ( negative ) = 11.80v

i hope you understand me

[angel-boy]

Re: a1278 board 820-2936-b doesn't charge

don`t forget to help me , realy need to fix this board.

[dellxps15]

Re: a1278 board 820-2936-b doesn't charge

these are without battery? (strange voltage), now post voltage with battery and power supply and if it was with battery, now post voltage with only power supply.

[angel-boy]

Re: a1278 board 820-2936-b doesn't charge

ok , see photo , witing for help

voltaje with battery and no charger, is the same with battery and charger.

[angel-boy]

Re: a1278 board 820-2936-b doesn't charge

please. i`m in a hurry to fix this

[angel-boy]

Re: a1278 board 820-2936-b doesn't charge

please. i`m in a hurry to fix this

please

[angel-boy]

Re: a1278 board 820-2936-b doesn't charge

come one , realy cannot help me ?

[skynet85]

Re: a1278 board 820-2936-b doesn't charge

Hello , anyone else has solved this problem with this board

[twitchferrett]

Re: a1278 board 820-2936-b doesn't charge

Please provide password?

[Deluccia]

Re: a1278 board 820-2936-b doesn't charge

Can someone please please help me out with the .BRD board view file for the 820-2936-A as the .RAR file will not open for some reason.. thank you

[piernov]

Re: a1278 board 820-2936-b doesn't charge

The rar archive works fine. Try using PeaZip or 7-Zip on Windows, or unrar on Linux for example.

[macfix GT]

Re: a1278 board 820-2936-b doesn't charge

any solution for this issue?

[piernov]

Re: a1278 board 820-2936-b doesn't charge

Open a new thread to describe your specific issue in as much details as possible.

[fred77]

Re: a1278 board 820-2936-b doesn't charge

Good morning all,

I just looked at all the posts but I haven't found the solution to my problem yet.
I have a 2011 MBP with a board of 820-2936B
It works well except for the battery charge and the charge indicator green light on the side of the MBP.
The problem is the battery does not charge and the green charge level indicators do not light up.
When the macsafe is plugged in, the green LED lights up and turns red during pends 4s then it goes back to green with or without battery.
I replaced ISL6259 but nothing always changed the same failure.
I checked the resistance R5280 input and output = 3,468V
I checked the resistance R5281 input and output = 3,468V
I checked the resistance R7051 input and output = 12.4V
I checked the resistance R7052 input and output = 12.4V
I measured at Q7055 terminal 1,2,3 = 12,4V
terminal 4 = 12.37V?
terminal 5 = 5v which drops to 0V?
By testing in diode mode on SMC_BSA_SDA = 0.492 ohms
and SMC_BSA_SCL = 0.480 ohms
on CHGR_BGATE = 12.37V instead of 5V?

Does anyone have a solution to my problem thanking you
thank you

[Yal MicroElectronica]

Re: a1278 board 820-2936-b doesn't charge

Try this

gracias

[irshadA]

Re: a1278 board 820-2936-b doesn't charge

SMC faulty

SMC remove then u will check