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f7700 is good

I get 0v on pin 2 of r7731 the bkl_en line. i do get a picture

I have a macbook air with no backlight, I get a picture but no backlight, i have no idea where to even start measuring for problems on this thing. There has been no liquid damage on this board at all. thanks for any help you can give

okay so you think the ic is junk.

Sorry didnt realize theyd be so small, heres the larger images. http://imgur.com/a/YQoAt

No Title this is what comes up when I attempt to boot if it helps

http://www.ebay.com/itm/171990330681?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

posted twice**

I put a new smc on the board and am no longer getting the short to ground on the data line but now i get no light on the charger and when i plug it in the fan runs full speed. the computer trys to boot but fails and gives me a bunch of lines of code on the left side of the screen then takes me...

removed U7100 still get the same .0033 to ground in diode mode.. is there anywhere i can get a stencil for the smc?

It worked, thanks

I have an 820-3437-a macbook air that works just fine off the charger but will not recognize the battery, I have tried a new battery but still the same result. R5380 reads 5 ohms on the board, but the correct 2k ohms off the board. I get .0034 in diode mode on the smbus_smc_5_g3_sda line. any...

okay will do, thanks a lot

i have tried a working magsafe and still got the same dim green light on the charger a while ago but i didnt do any measurements with it, i can get it back if needed

268 ohms on r7005, 10 ohms on 7021 10 ohms on r7022

16.3v on pin 2 with random dips to 15.4

280 mv fluctuates slightly

I get .469 on f7040

I have a 2010 macbook pro with an 820-2879-b mother board and it wont turn on, I am getting a very dim green light on the charger and have traced the problem back to the acok circuit, I get all the correct voltages up to pin 1 of R7010. I get 17.09 volts on pin one but 0 on pin 2, R7010 is...