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PM_SLP_S4_L - Remains at 3.3v after the system goes to sleep and remains that way for close to an hour.

Sorry for the late response PM_SLP_S4_L - Remains at 3.3v after the system goes to sleep and the fan shuts off PM_SLP_S3_L - Drops to 0 from 3.3v once the system goes to sleep and the fan shuts off

Have this MacBook pro that runs without issues. But once you closed the lid (system goes to sleep, fan is off) and leave it closed overnight, by mid-day the next day, the battery is fully drained. Once, I check it when the lid was closed for a couple of hours and the boards was warm (fan wasn't...

Have this unit that isn't powering up. Found the cause to be audio/ IO board on the left of the palmrest. The board and the cable were corroded. Once i replaced this, both usb-c ports are now going to 20v but never powers up. Trying using the T2 bridge restore but keep getting this message/error...

Yep. Tried both revive and restore and both gave me the same message. It goes through the install process and just sits there for a while then gives the error. See picture.

Tried DFU restore and just never comes on, causing the DFU to faulted out after a while being stuck in install state.

Thanks a lot. That worked perfectly. Is there a link to a document that list all the resistors, like you did, for all model boars (A1398 - all years, A1502 - all years, and so on)?

I have this board that i believe needs it's ram chips changed. I'm getting error PPM003/004 which points to an issue with the memory. I've checked for corrosion and found none. As this my first ever ram replacement, my question, does it matter if the chip i used is of a different manufacturer...

Have this board that originally had corrosion damaged and PP20V_USBC was at 5v. Cleaned all up. Replaced U9080 and U9580, both were shorted out. Now PP20V_USBC is now at 20v but no current is being pulled. I'm getting 0v @ PP5V_G3S. P5VG3S_EN - 0v PPBUS_HS_3V3G3H_T - 12.2 PPBUS_G3H - 12.2 Any...

Replaced U8490 but still not booting up. Then removed D7600 and PM_PGOOD_FET_P12V_S5_SSD was restored. So replaced U7600 and the board now has a new problem. The first led keeps blinking and blinks faster when i hold down the power button. PP3V3_S5_REG_SSD keeps bouncing from 3.3 to 1.09. When i...

PPVCC_S0_CPU starts at around 1.09 and then regulates until it stops at 0.7 When i plug in my usb adapter, it flashes on for like a second.

this is my first iMac repair, but yeah i do try to purchase donor boards when i'm able to get good deals on a batch. I've ordered a 2012 donor board as 2015 are being sold in the $100's. The 2012 does have the U8490 chip. I'll update you if this fixes the issue once i get the board.

yeah i believe that would be the most reasonable assumption as these naming are so out of the norm from all other schematics. Anyway, some how i missed this when i was digging around, the board was missing R8489 and R8496. I found a direct replacement for R8489 but had to use a different rated...

yeah thinking it must have being an intern trying to impress the big guys. Anyway, pin 12 - 0.0

That is vin power for U7600 pin 17. This is the same power signal PP12V_S5_SSD coming from Q8490.

Got an iMac 27" 2015 that stopped powering up after HDD replacement. I've confirmed the psu works, i have all the PP12V_ACDC and 3.3v on the PWR_BTN_R, which drops to .5 when power button is pressed. PP12V_S5_FET_P3V3_S5_P5V_S4 - 12.1 PP5V_S5 from U7600 is 0. Is this controlled by an enable...

Put in good BIOS and clean ME. Same issue.

the camera quality was a bit poor, it's actually white in color the component. Basically identical to PPBUS_G3H fuse found on A1466 logic boards. The power board number is: 02-6712-6700 other numbers on the board: Model - ADP-300AF T XU100150-13002

This iMac was sent to me stating it stopped working after they attempted to upgrade the HDD to SSD. i believe i've found the issue but first want to confirm and second want to see if anyone know's what size the fuse is. See picture. I measured across and i'm getting what appears to be an open...

Would you happen to a good BIOS or is a clean ME enough, which i already flashed with the same result.