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clawhammer64

macrumors newbie
Original poster
Apr 7, 2015
5
0
Saint-Petersburg
Hello! Platform: 820-2530a

The notebook came after another service. Everything works expect battery detect - "X" in mac OS, and no charge, magsafe always bright green.
Also the LED battery measurement bar doesn't work.

Now i disconnect battery, LED bar, and only plug Magsafe.
Resistance between SMB_BSA_CLK, SMB_BSA_DATA to GND = 13 kOhm,
Voltage 3.4v both. R5280, R5280 = 2kOhm both. Also i blowed off D6950.

i've just checked SCL SDA with oscilloscope!

I see SCL signals, but nothing from SDA, only permanent 3.4v. Battery now show in Mac OS as 0%, and if i go to system preferences - power properties - the error occurs during collecting data.

I think there is fault in SMC SDA line, don't you think?
 
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