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As the title says, tested in fully working known good top case including the trackpad. If the trackpad is connected it starts to boot, shows apple logo and just before it has to show the login screen it restarts. It is the same with internal SSD, external OS and known good SSD. Side note, the...

CPU gets hot, no USB activity, and no caps lock light. EFI?

Hi There, This is the first time i had to fix a screen backlight circuit on this model and i have a very weird issue. The backlight driver was badly damaged with many traces around it. Measuring continuity on the sense circuit from one side of the board to the other seems to be connected. If I...

Another one that just died on it's own. No visible liquid or any other damage. Reported by the user that just died. The fan will spin for 5-6 seconds and all rails are present No short found on any big caps or coils Once the fan stops all the pch signals are there, s5 pwrgd is there but no sus_l

No visible liquid or corrosion anywhere. Reported by the user that was working slowly and then just died All rails pulsing. In SMC bypass will repeatedly spin the fan for a split second every 2 seconds. Might stop after a few minutes. No short found on any coils or big caps. Does the CPU die...

Hello, I have this board that had slight corrosion marks but no major liquid spill or anything. replacing the 3 resistors that were damaged - R5641, R5193, R8167 didn't fix the issue It goes to S0, kinda. PP3v3_S0 - 3.3v PM_SLP_S5_l - 3.3v PP5v_S5 - 5v PP3v3_Sus - 3.3v ppvrtc_g3h - 3.3v...

Originally there was damage on Y1905, U3510 and C7540. Very isolated damage. Nothing looked corroded, just cleaning the liquid stains (probably had sugar) was enough to see that the parts were not visibly damaged. I will post the measurements, but keep in mind that I already tried replacing...

Uknown history looks like someone cleaned the board ultrasonically No visible corrosion Takes 5V and 0.08A looping to 0.00A every ~5 seconds PP3V3_G3H_RTC - 3.3V PPBUS_G3H - 12.3V PP3V3_UPC_XB_LDO - 3.3V PP1V1_UPC_XB_LDO_BMC - 0V -- EDIT: Available if i power from this port PP1V8_UPC_XB_LDOD...

Liquid damaged keyboard connector and around UA600. I replaced a few caps that looked damaged (C7274, C7290, CA607) and retinned the keyboard connector. I also reflowed UA600 to make sure that all pins are properly connected. The device turns on, takes 19.2V and 1.13A. The fans start at normal...

Originally J2401 was liquid damaged and had to be replaced. After replacement, there was still no touch. The touch IC was also corroded around C2410 so I ended up replacing U2402 as reflowing didn't help either. After that, there is still no touch. There was more damage but since the phone is...

Hello, I have this board that had short to ground on CB300 due to a liquid spill on that side. It was isolated liquid damage on that side of the board. After repairing that the left fan (looking from top) now starts at max speed and stays there. The other fan is not even on. I can control both...

Hello, This originally had liquid damage on and around the lvds backlight capacitors (C8469..) I first cleaned the board, it was dead prior, after cleaning it was turning on but no backlight. I replaced the bad looking capacitors and it showed backlight. I cleaned the board again to remove the...

As always lets start with a bit history. It might be helpful. Originally it had damaged usb port due to liquid (replaced the ports), and damaged U7650 (might have been good but since there was some corrosion on pin 23 i replaced it) Currently i get 19.4V 0.02A on both ports PP5V_S5 - 0V...

It was badly liquid damaged and a few resistors/caps missing on the board due to someone brushing it It was turning on and working but no audio jack (not detecting headphones) and bluetooth not working. After replacing the missing components and ultrasonic cleaning it is not turning on at all...

A bit of history before we start Liquid damage around the SMC and a few other areas. After repairing all the visible damage and traces it was still not turning on. I decided to replace the SMC and it turned out it had quite a bit of corrosion underneath, however, didn't turn on after the new...

Liquid damaged board, repaired, and cleaned. The keyboard is not responding at all other than the power button. Tested with new known good trackpad and trackpad flex, still the same issue. I tried replacing U4820 and U4830, still the same issue. There are not broken traces on the trackpad and...

Hello, I'll give a quick description of the original damage and what I've done till now and then provide some measurements. I've attached photos with the initial damage and after removing the short on the trackpad connector. Initially, PPVIN_S4_TPAD_FUSE was shorted and the short was removed by...