Search results

Can we replace pch from donor board?

The board does not power on, no green light in charger. ppbus g3h is 8.30 v pp3v42 measures 3volts. i have tried changing chip but its not working. any idea where to look at?

Yes sus voltages are present, i think its pch as its getting boiling hot

hi, i have a 820-3115-b which is not turning, but there is green light in charger. i have measured following voltages: ppbus_g3h is around 12.43v PPVRTC_G3H is 3.3v smc_on_l is 3.3v but pp5v_s3 is missing. i have tried changing u7200 but it didn't fixed it, also the pch is getting hot when...

Its 12.30 stable without battery and fluctuating with battery connected. yes i get magsafe light

It is previous repair attempt, ppbus_g3h is on 12.30 volts,

i have 820-3115-b which is not turning on, when i plug magsafe adapter, the fan spins and optical drive keep making noise but it does not turns on. i checked all the voltage rails and they are normal except PPBUS_G3H its jumping between 12.56 and 9 volts when battery is connected, without...

Yes i have tried to changing dc in board and flat cable, but it have same issue

i ran asd many times and when charger is not connected test fails at "sensor voltage {vp0r}" sensor is reading below limit, and when charger is connected, the test is passed.

hi, i am pretty new to this stuff and i have few doubts regarding repairs. first one is how to check that which ASD will work with which board? and second one is are capacitors necessary in macbook logic boards or will it work fine without them, for instance i have seen jessa knocking of caps...

i ran efi test and first time it said error on chipset managment engine presence not found after that i restarted mac and ran tests again and it passed

Okay, so i ran asd 3s156 and test failed at product {test # 14} - sleep/wake 30/60 test -verifies that a unit can automatically sleep and wake using os sleepx tool with 30/60 settings ERROR --11[ invalid wake event] --- test failed Testing failed

can you tell what asd should i use? there are many versions. its macbook air early 2014 model

hi, i have a 820-3437-b which works fine sometimes and other times it takes too long to turn on from sleep, and from last night it was in my backpack and it kept restarting after few hours by itself and i would hear startup chime two times whenever it restarted. i also ran hwmonitor in it and...

okay, so i checked with my ssd that have windows on it and when i press option during startup, it only shows windows partition, and mac partiton is not showing up

Doesn't show any disk in disk utility. it think its something with logicboard

hi, i have 820-3437b for repairs, the customer said its not detectin ssd, he has tried same ssd in different macbook and it works. the board doesn't have any signs of liquid damage i am fairly new with macbook repairs, so i don't know where to start with this type of problem is there anyone who...

fixed it, its was JTAG connector. can't believe i wasted 2 days for figuring that out

should all pins of u6100 have 3.3 volts?

i have 820-3437-b which had water damage on rtc and smc reset circuit, i cleaned the pads and put cips back on, and it was working fine and now it has stopped again. charger gets green light then turns to orange and have quarter fan spin, i am fairly new at logic board repairs so please bear...