Recent content by Palhano

It was a small capacitor around the chip. Injecting 1V and using alcohol, it boiled slightly; it was barely visible under a microscope.

I found changes in the U3200. When connected to that port, I don't get PPBus. I checked in diode mode and the 1.5V LDO line has 0.090. I'm going to order this chip to replace it. Could it be the cause of the problem?

My Mac is dead. I tested the power supply and I have 12V. Based on some videos online, I found a short circuit in a line that seems quite common to the problem, but I don't have a good circuit board to identify which line it is and there's no schematic. I removed a resistor to reduce the area...

Removing R6934/5 stabilizes PPBus at 12.6V. R6934/5 in diode mode, both pins 1 and 2 have 0.450

I found a short circuit on the PP3V3_GH3_RTC line. It was a badly burnt U6960. I removed it and the short circuit disappeared, but when I put in a new chip, I have problems with the PPBus voltage fluctuating. As a test, I removed R6900 and the PPBus has 12.6V. If I leave the board without...

I discovered that I do not have the PP3v3_s5, even with the battery connected, which stays at 20v and pulling 0.7a and restarting. There is no short in the line, diode mode 0.330

Do you think it's worth trying to change the SSD controller or is it a waste of time?

My Mac stopped working overnight. I took it apart and it was very dirty. I thought it was a typical short on the SSD's 2.5V line, but there were no shorts. I have G3S voltages, and on the SSD, I only have 12.6V PPBus. I don't have 2.5V. Regarding SMC_RST*, my notes showed NC for the 9240...

I forgot the measurements of the u7000. I forgot the measurements of the u7000. With the F7000/1 in place P_IN - 20v AUX_DET - 4.1v SMC_RST_IN - 0 VDDA - 5v VDDP - 5v EN_MVR - 5v SMC_RST* - 1.8v AUX_OK - NC AMON - 0 BMON 0

With the battery connected, I have 20V, it starts pulling 0.6A, 0.7A, and then drops to 0, looping. Without the battery, it stays stuck at 20V and 0.02A (stable). - I use an original 87W charger. - All CD3215s have perfect LDO lines - Same behavior on all ports - I tried to restore in DFU, but...

It was the D6950 shorting on the SDA line. I replaced it, the short went away, and I have 12V on the C7050. I put the F7000 back in, and the board is working. Thank you so much! Always a lifesaver!

Shorted SDA line (diode mode 0.007). I removed the u7000, it's not the problem. Can I envy the voltage?

I discovered that the 3v3_s2 line was missing. So I replaced the UC710 and it worked. Now I have a picture on the screen and the fan is on automatic. Note: I'm using the UP800 from another board! Thanks for the tips!

both lines with 3.4v

I checked everything around the UP800, everything was perfect. I replaced the UP800 again for testing and also the LVDS cable, with no results.