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Ok thanks.

Great. I've tried that screen from the A1369 and it works! Now to find a replacement for the original. Thanks for your help guys :)

I have a 2011 A1369 which beeps 3 times the waits then beeps 3 times, but it won't boot. Is this a RAM issue, and if so is it possible to repair?

Will a screen from a 2011 A1369 work for testing, or are they different to the A1466?

Ok thanks, I'll try that

This machine had liquid spill. It chimes but no apple logo. Screen quickly illuminates but is divided in 2 horizontally with lots of fine coloured lines across the entire area. I've tried connecting an external screen (monitor), but there is nothing being displayed on it. There is noticeable...

Ok. Thank you for all your help and patience.

Ok, so does this mean it's game over for this board?

What does MCP stand for? Does this mean that the board is beyond repair?

SCL to ground = 0.533V SDA to ground = 0.532V 3V42 to ground = 14.85K 3V42 to ground probes reversed = 1.40K Just to make sure I understand the process here, When I'm doing these tests, the board is removed but the fan is connected. Should the fan spin when the board is starting up?, if not...

Pin 4 =SMBUS_BAT_SCL = 3.39V Resistance to ground = 19.8K ohm (after meter settled, I'm guessing it was charging a cap) Pin 6=SMBUS_BAT_SDA = 3.39V Resistance to ground = 86.0 K ohm (after meter settled again) Sorry, I don't understand the next part: ??????{Trigger SMC_ONOFF_L and see how...

Sorry for that typo, should have read 12.39v Readings for U6900 without bat pin 1: 3.36v -3.41v pin 2: 0v pin 3: 276.2.mv pin 4: 3.29v - 3.37v pin 5: 3.37v With bat pin 1: 3.33v - 3.41v pin 2: 0v pin 3: 156mv pin 4: 3.32v - 3.37v pin 5: 3.29 - 3.38v Readings for U6901 without battery pin 1...

Sorry, I'm not sure how to do that.

Hi 2informaticos, Thanks for the reply PPBUS_G3H measured at pin 2 on f7040 = 12.55v bouncing down to 7.68v with battery " " " " " " " " = 12.57v " " " 2.39v w/o battery

Hi all, I am trying to troubleshoot power issues with this 2010 A1278 MBP with a 820-2879-B board. It has Green light on, no orange. voltage at main fuse f6905=17.34v bouncing down to 16.94v Voltage at pin 5 on u6901 =3.40v pin 1 on u6901 =3.19v bouncing to =3.26v pin 4 on u6901=3.33v bouncing...