Recent content by macpc

Ok after replacing Usb Controller chip (DONOR BOARD) its powering up. Fan didnt work due trackpad cable with corrosion. Clean and re-solder pins on connector fan spinning and now is a happy MacBook. Thank you guys. SOLVED.

Ok Ill try to replace trackpad cable first.

Trackpad cable has corrosion on connector, do you think it affects the fan ? not sure if trackpad and keyboard communicate each other on this model. Both fans look perfect.

CPU is overheating because fan is not spinning and it shuts down after a few minutes on.

Replaced from a donor board and now its working fine. BUT it's overheating, fan not spinning and shutting down itself because overheat. Keyboard is working fine. I know this keyboard goes connected to the fan. any points to test?

Yes I removed fuse and I get 0v. Yes positive, I used c00 chip. Not from donor board I got the chip itself already reballed. I will try to use the one on donor board and Ill post back.

Checked resistance to ground and no short. I dont get anything on PPBUS_G3H. I guess Im not getting PPBUS_G3H cos there's no 20v on PPDCIN_G3H

I injected 3.3v on PP3v3_G3H. no amperage draw. I guess theres a short on some of the lines thats why when it tries to reach 20v it goes on a loop not passing more than 5v. I will check lines for short. Any ideas you guys can add?

241k resistance to ground on 3V3_G3H 1.195v Diode mode on 3V3_G3H I hate these new models

Yes it does the same on all of them. No pp3v3 present

Good Point. Ok I tried a original cable, once its plugged the amp meter reads 5v then starts to go up and shuts down and restart.

PPDCIN_G3H 0v. Yes same CD3215

820-00239 Not powering on liquid damaged. I get 20V on Q3200 PP20V_USBC_XB_VBUS_F but its not opening. Which means I am not getting PPDCIN_G3H. I replaced already U3200 thinking it was the cause of not opening the gate on Q3200. What could be the reason of not opening?