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is the same defect. I checked L7760 that the resistance is 265 Ohms, compared to another board, this value is very low.

yes. It turns on only when the battery is connected. The display does not show an image, as it has been shorted on the LCD connector, PDM_DMIC_DATA0_ISOL, PDM_DMIC_CLK0 and SMC_LID_LEFT.

P1V8S0_EN 3.2V P1V8S0_SW 0.541V P1V8S0_PGOOD 0V P1V8SO_FB 0.182V P1V8S0_SS 0.341V P1V8S0_COMP 3.2V diode mode P1V8S0_EN 0.615V P1V8S0_SW 0.172V P1V8S0_PGOOD 0.425V P1V8SO_FB 0.685V P1V8S0_SS 0.615V P1V8S0_COMP 0.691V that way ?

Good afternoon, this Mac suffered oxidation in region 7655, 8FHXTW and conector FPC LCD, where components were missing, I performed the replacement, in tests the Mac takes a while to present image, and after a while the image is distorted, cracked. PPBUS 12.65V

2 0.517V 5 e 6 3.2V 7 0.175V 3 3.31V 8 0V 0 0V

Hey info, this mac used to turn on, but I ended up changing some components, it stopped turning on. I replaced u1950, U1900 and U8005. PM_SLP_S0_L 0V, no pulse when SMC_ONOFF is triggered PM_SLP_S3_BUF_L 0v, NO PULSE PM_SLP_S4_L 0V, no pulse PM_SLP_S5_L 0V, 31mV PM_SLP_SUS_L 0v, 68mV...

In that case, is the PCH dead?

diode: L7760 0.170V I removed the U2600 and U7760, but it still shows this 0.170V diode-scale value.

L7700 1.242V L7760 0.536V L7770 1.515V

L7220 3.3V L7260 5.086V L7330 1.5V L7630 1.060V L7560/L7550/L7510/L7520 0V, no pulse

Check R7402/03.

Hey info, this mac suffered oxidation in the region of the u2600 and SMC, I replaced the oxidized components, but the fan does not rotate. I replaced the u2600, SMC, u7400 and y2605. Voltage: PPbus 12.59 PP3v3_42 3.5V PPVRTC_G3H 3.31V ALL_Sys 0V, no pulse. PLT_rstv 0V, no pulse PP3v3_sus...

I give up, thank you.

I have replaced UB400 and nearby oxidized components, but the PPBUS is still at 100mV. could it be the U5000? How can I identify my measurements? I would really like to solve this mac, I am trying for almost a year.

On this mac, I changed all the sensors that could cause this: SMC, U5810, Q5850, U5800, Q5860, Q5830... I used another trackpad, flex trackpad, IO power, flex LIO, all these parts work. But it didn't work. I will try this stopgap solution.

Can the bios cause a sensor defect?

Now the keyboard and trackpad are not working, but on the Boot screen, the trackpad and keyboard work.

I have replaced the u5800, SMC, Q5830, and Q5860, but the cooler is still running fast