For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
Hi, I got this device with liquid damage.
Mainboard is cleaned and was not many liquid to see.
The display is not working. with another display the machine is working good.
The big connector looks pretty good.
I found that there is a burned backlight connector. So i soldered a nice...
I have this device here, no green/orange light, dont turn on.
found short R7121 Pin 1 to ground and high resistant R7121 and R7122
after replacing u7100 there was no short anymore.
So i replaced the R7121 and R7122 after that all was ok but i found there goes 6A in to the machine.
hi, i am just workin g on this device, no problems to see on the board
first green led is lightning, no reaction by pressing power button
platform reset is still low
i have 3.41V, 3.3V_s0 and 5V s0 and 12V_S0
I dont have PP5V_S4_REG
PP3V?V_S5_REG is ok
I have here a late 2011 untouched Mainboard. Customer told me he had problems with the GPU and they switched off the gpu. of course a external moniotor is not possible and preferences shows only intel gpu.
Machine is working good, the rotating donat is showing up as well.
I want now to...
I got an a1708 with no big liquid damage. After replacing Topcase and Battery everthing is working good. The customer was happy, but now he came back after 6 month with audio problem.
I found during I replaced the topcase I damaged the flexcable from the headphone jack port. I...
I got a A1706 from client with not working keyboard (key b and n sometimes double printing the letter)
I ordered 3 new topcases including battery
After installing mainboard and display I have now that
I tryed with all 3, all the same. With the old one with keyboardp roblems...
I got a strange problem.
Got from customer an A1425 with blinking question mark
I pulled out a working 256GB SDD from a A1398 (2012) and insert that in the A1425. Everything is booting and working ok.
Now I take the "bad" 128GB SSD from the A1425 and insert it in the A1398 and...
Hello, I have a problem I dont know what could that be.
I replaced a mainboard from a macbook air, everything is working well, only internet is aproblem.
I can see the WiFi names, I can conect to WiFi
I see my IP, DNS all isok, but safari dont let me in the internet. the same external drive is...
I got already the second device with the same problem.
Is this a comon problem and perhaps repairable with an reflow or is this rubbish only, still dont had that.
No SSD to see, not in osx, nowhere...
I just have an 820-3787 here it had a hole in the board near u7100 and no power on
I replaced U7100 and soldered the missing traces. After that it worked, Trackpad working, keyboard wrote what it want. Then with a new Akku I noticed that It consumed 4-6A, after that I limited the...
I just got in this device. No damage no liquid spill to see.
it is starting, chiming but nothing to see. External screen is black as well.
First I checked the display. On another machine the display is working good. So Display and Display cable is good.
then I checked for L9410...
i just work on this board. it came in with"liquid damage" but i looked the whole board and nothing to see, its not cleaned.
i found a short PPbus_G3H to GND, After replacing U7310 i got a fanspin, but still no cpu vcore.
CPUVR_FCCM is zero. It has to be zero? in schematics is a...
the board is not turning on, no liquid to see.
i found a short to GND on PPBUS_G3H, I pulled the F7140/41, short to gnd still on buckconverter side
i pulled the u7100, still the same, so i pulled Q7135 and no short anymore. I ordered new q7135 and after solder in no short anymore, i...
i have a 2915 with gpu problem. i replacede the gpu, now the picture is ok
and ASD is passing all.
if i start from my ssd in sierra and i start the benchmark software Heaven to test the gpu. i can see it switsching and it is loading and just in the moment it should start the screen...
got this imac 21.5" with blinking "?" Folder
is it worth to open it ? is it a common thing for example no power on SSD Port?
or is it more common for a bad SSD
I dont want waste the time for open it, till now i told the client the SSD is gone.
hi, i just got that board
so i tested the lcd with a working board. that is ok.
i resoldered the u8900 but still nothing
L8960 and L8930, L8310 and L8360 have no power at all
the machin is chiming
in Diode mode there is almost the same value like on the good board...
i just work on that board.
it had gpu problem. I replaced the gpu and everything is working fine. i let play a video and went to lunch. when i came back after an hour it is only beeping the Ram-error code. during beeping the front led is not lightning or blinking.
I cleaned the ports and...
i got that board from customer. he said liquid spill.
i have 12.54V so smc is working
PP3V3_S5 is 3.3V
PP5V_S5 is 5.0V
PP5V_S3 is 0V
PM_SLP_S4_L I get spices of 3.43V every about 3sec.
I found corrosion aroud U8330 but i think thats is not important now
next spot is around U...