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I already solved the problem, it was the flex. The problem with this machine is that suddenly the system is being installed and it shuts down and starts the folder with a question mark.

hello everyone. This board does not detect voltage when connecting the battery. already ruled out battery. when connecting the 87 watt cable, PPBUS is 12.56V the voltage on the PPVBAT_G3H_CONN line is 12.57Volts then it drops to 168mv, it's as if it were looking for the battery. i2c battery...

in fact yes, I can program the nands if you have P13

Believe it or not, that happened to me, but it's already working with the battery. Now I focus on the touchbar, in the system preferences it is recognizing it, I even pressed it and the volume symbol was activated... the problem is that it does not light up... The keyboard dims when you cover...

the problem is two. there is no ppbus with the battery connected... If I only connect the charger "WITHOUT THE BATTERY connected" the machine turns on. The touch bar is another problem. if there is ppbus with the battery connected but when disconnecting the charger, the equipment turns off...

keyboard light works The J5110 voltages are present, the problem is that PPBUS_G3H is not generated with the battery...

Hi everyone. This machine when I disconnect the flex from the battery, it generates 20V and turns on. The machine has a problem that the touch bar works but does not show an image. suggestions? Thank you!

Hello everyone, this model has a consumption of 1,200 amps. It doesn't turn on, it arrived because it didn't detect the hard drive... The machine cycles on from 0.0013 amps then rises to 0.900 amps and then drops to 0.0013 amps. This plate makes a cycle of 3 ignitions... who is in charge of...

I don't understand when you mean usb activity... but when I connect a usb c to normal usb the led lights up

no, the keyboard light does not turn on, and the top case works because it is from a computer that is 100% operational. There is no light on the keyboard but there is click on the trackpad it is very strange

yes i did that I disconnected the flex from the LCD so that I can take an image through the USB c to HDMI adapter and nothing...

I have usb activity but I don't have external image...

This team tells me the client that it was turned off out of nowhere. PPBUS_G3H 13.05V CPU voltages, PPVCCCPU_S0G is 0.95 then drops to 0.66v. There is no startup sound. PM_PCH_PWROK and PM_PCH_SYS_PWROK present with 2.96V AP_RESET_L 3.0V PLT_RST_L 3.31V RAM voltages present. I don't know...

solved... problems in that sector corrosion and broken tracks... thanks for guiding me @2informaticos

Hi everyone. I have an a1707 that does not detect an accessory such as usb c to hdmi through the J3300 port, normal charging in both ports on both sides. In the JB500 connector it works perfectly. I already changed U2800 U3100 U3200

check the PWM signals coming out of ISL to the transistors?

I passed the diagnostic mode but it did not throw any error code. Activity monitor does not show anything abnormal. What I have noticed is that when the "about this mac" window is opened, that WINDOW is frozen, but not the machine. That is, I cannot close the window that shows information...

place the complete motherboard in another case, to rule out that it was some peripheral. but equal. The same problem

try with clean bios. If I can access the boot menu without problem.

yes brother, also reprogram bios and still the same. The recovery mode loads quickly without problem, the problem is when starting the system and when you are going to turn it off, it also takes time.