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I do have a MBP A2289 (820-01987) which is not turning ON has around 5.15v on the USB-C connectorI tried DFU to see if have any behavior on Apple Configurator. Nothing happened PPBUS_G3H = 12.23 and drops to 8 in a constant loop 3V3_G3H_RTC = Goes to 1.7v and drops in a constant loop

its not turning on I dissemble everything and now I am with the bare board and the DC-IN adapter PP18V5_DCIN_FUSE = 17V PPBUS = 0V F9700 PP3V42_G3H = 0V

Found bad F9700 and replace it with another one Now I do get 11.06V But still same behavior the machine turn on but still with a backlight issue. If I use a flash light I can see the user screen to login

PPBUS = 12.3 and then drops to 7 in a LOOP Not able to DFU!

Customer told he brought to another store to replace trackpad and not its not turning on anymore The board doesnt look like any component was replaced. To be honest it looked untouched But I saw some small balls around the U6100 PPBUS = 8.58v PP3V42_G3H = 3.39v PP5V_S5 = 5V PP5V_S4RS3 = 0v...

MBA A2337 If you turn it on it works perfectly. However if you close the lid and open again keyboard and trackpad do not work anymore you need to RESTART machine for it to work again. If you plug a USB mouse it will work even if the trackpad is NOT WORKING Any ideas about this issue?

Hi I am going to upgrade the SSD to 512GB It came 4 NAND IC U8600 U8700 U8800 U8900 Since there is no BRD file for this board I am not sure the location of the IC Watching the video below I found 86 and 87. Can you give tell me which one goes besides 86 and 87 they are on different sides of...

820-00850-A It tries to turn on appears the Apple logo and starts loading and the it crashs and keep in a loop Customer told that before brings to me it appears even the login screen and then crash Doing visual inspections the board looks fine Is it board issue or the disk is crashed and...

Replaced PSU and same behavior Dissambled board and noticed a lot of dust on it Remove the USB ports protection and find oxidation on C9415 and C9610 I tought it was them but with multimeter they are not short to ground In the middle is C9487 which does not look bad not with oxidation but...

Customer History: He plugged a MagSafe which he says it was in SHORT and then the macbook shut off forever First I replaced the DC-IN Assuming that 16.72V was wrong at PP18V5 However with a new one it showed up the same value We do have DIM GREENLIGHT Some of my measurements PP18V5...

Its in loop with quarter fan spin IMPORTANT to mention. I already reballed SMC, thinking that could be dust below it. So it would not be a problem anymore, the reballing was done perfectly Some measurements below PPBUS_G3H = 12.52v stable PP3V42_G3H = 3.45v stable PP5V_S5 = 4.94v stable...

This iMac is restarting sometimes and I am getting this error message Any advice on what could be the issue related to this? tried to upload but says too large files Link of the images ->

MBP A1502 No image on screen, BUT with external monitor its working 100% fine SINCE I do not have same MBP A1502 screen to test and check if its BAD screen. Is there any other test that I could make? Can I test an old A1278 screen on this model to check? Any other method to test before going...

I am with this board as not turning ON Fan doesn't have any behavior PPBUS_G3H = 8V PP3V42 = 3.40v PP5V_S5 = 5V PP5V_S0 = Tries to get to 5V and then drops to 0 and its a loop doing that.

Customer told Coffee was dropped on it. Actually it looks really clean. However I noticed that if everything is plugged it gives me 5.15V on the power cord amp meter PPBUS = 0v. If I unplug that cable which connects the sound and I guess the power button to the board itself it goes to 20V...

Sorry to post on this category not sure where to post I tried a brand new screen and it works fine. Its also not the cable. Is there a way to fix this problem? iMac A1418 LATE 2013

Hello guys I have this Macbook Pro 820-4924 which doens't have image/backlight. Below are some measurments SMC_LID = 3.38v PPBUS = 12.53V Q7700 1 = 0V 2 = 0V 3 = 12.43 4 = 12.53 5 = 0V 6 = 0V DIODE MODE READINGS PIN 3/4 LCD CONNECTOR 0.484v REPLACE THE IC WITH A KNOW GOOD ONE STILL NO...

I went to youtube and saw this video Bought the 3 MOSFETS and went to replace it. However when removing the last one on the top right. I actually removed the middle ground pad. Not a bad thing but made me resolder it again 3 times. I think now its perfectly working. The problem is that I...

820-00165-02 Fan Spin = OK ALL MAIN RAILS ARE PRESENT AND AS IT SHOULD I ALREADY REPLACE BIOS IN ORDER TO GET IT WORKING NO SUCCESS CPU GETS HOTS Tried to check external image.. also NO IMAGE

820-3437B Not turning on No fan spin All the main rails are present The only weird stuff is PP1V05_S0 and _SUS which are supposed to be 1.05V and both lines are 1.40V