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I have this board apparently no short, also checked main voltages and current sensing circuit around u7200 for wrong resistor values. Didn't find the cause of the problem so far.

May be too late but, here I’m. Ciao

I’m getting this upgrade option under my profile settings... Available upgrades Macbook Repair forum subscription(USE THIS ONE)$29.00 per month

Louis I also noticed my accounit doesn’t seems to be a payed subscription as shown in my profile... you still getting my money from PayPal so this problem should not exist. Would you please check considering that my paypal account differs from the mail address used for the forum access. PayPal...

Got it, thanks by now

You mean I need to route back those two signal from the connector? Is there perhaps any schematic to check for in order to provide also power to the ext airport module? I’ll try to sort this out. Thank you

At this point should I blame the pch side? Is there a way to know if the two signals coming from the usb hub 2 reaches U1800?

compared voltage drops with other boards with graphics issues but no known BT issues and couldn’t find any difference. I also swapped U3700 with no luck. Swapped in total 3 flats and wifi modules with no differences. I see the WiFi but the BT still not showing up in the system resources. I also...

Yes other two which I didn’t test before but I assume can’t be both faulty in the same identical way...

I have this old machine that runs perfectly except for the BT wich is not showed in the os. I tried different OS before taking the mobo out. I swapped the BT/WiFi module with another one and still the same. Wifi works, USB works as well but no BT. I cheched the path from J3401 to U3700 and it's...

Anybody can help me in finding out the search feature I'm missing? Seems to be gone!

forgot to thank you ;-)

I was asking myself what am I missing in that 2 pins connector next to the lvds... The sensor was attached on the original screen I just received from the client and guess what? That seems to have solved the issue with the sensor of course and the fan now spins normally. Sorry for have been so...

me stupid, it was on the previous broken display and didn't find it untill now ;-) Could just be this one that was missing?

I found this note on page 50 of the schematic: U5600 Internal sensor of the EMC 1414 will be used as the ambient sensor. Hw Monitor reports 2 Ambient sensor values, one seems fine but I don't know where those are belonging to on the schematic.

820-3482 A I got this machine after a client DIY disk swap attempt. The screen was damaged as well the lvds flat wich I allready replaced. Now the machine presents an issue that prevent the system to run quiet... Fan spins at full speed probably due to the sensors misrepresented temperature...

never happened before but I know this board is proneto fail due ram slots issue... I ordered the ddr3 test board andI'll wait for it before consider the board gone... I'll pm you by the way..

SMC reballed and resoldered but now I get 3 beeps when ram inserted. only one beep with ram slot empty. Can this be the SMC as is the only thing I've messed up with...I'm triyng to find a reason why those 3 beeps, I also checked SMC_MEM_ISENSE wich is between 0,12 with only one module and 0,3...

Yes with camera cable disconnected nothing change... I decided to reball the smc on the new board but I had a problem with two pads on the chip itself that decided to stick on the PCB ... both pads were g3h, don?t know if that smc once rebelled will work again... this morning I?ll solder it...

Yesterday I took another board previously repaired from a liquid spill damage, put it in the same chassis and guess what? Same identical issue of the other board. Never tested that board before but that sounds really weird. Same ASD error with the camera and slow performance on boot and runtime...