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Tried Jumper. SOC_FORCE_DFU goes upto 1.8V. still doesnt detect. Wifi IC was shorted. Removed it. Main issue still the same.

41 - 12.6 voltage 42 - 5.1 voltage 48 - 0.152 voltage

U8180 PP3V3_S5 is pulsing 0.5V to 3V. And other are 0V. Replace U8180. Still the same.

No.

L7270 is 0V L8100 is 1.2V L8102 is 1V

L7270 is 0V L8100 is 1.2V L8102 is 1V

One port at 5V 0 amps and the other at very little amp draw. PPDCIN_G3H also missing in the 0 amp port. Replaced Cd3215 now both port exhibiting same behavior. ppbus at 12.3v but not detecting in DFU. G3S lines are 0V with no shorts. 5v/3v3/1v8. P3V_G3h is present. SLPDDR voltages around...

L7210/20 are 0V.

L7210/20 are 0V. Small spikes to 0.1V but majorly 0V. BAD CPU?

No.ALL_SYS_PWRGD didnt go up. All of R8164-8 are removed at this point. PM_SLP_S3_BUF_L is 0V - no shorts

So on thermal scanning UF000 was heating up accordingly with the amp meter pulse.

Pulled SOC_FORCE_DFU to 1.2V via jumper from PP1v25_s2 still not detecting in AC2. It will only run on a charged battery and not on only charger. AMP Meter Reboots every 2-3 seconds on both ports. and not detect in USB. i think issue with the USB C ports maybe?

Replaced UC710. Now i get 3v3_s2. But machine still draws only 5V. it tuens and goes into recovery with wireless KB/TP icons coming up first though both seem to work. If i restart it will show the logo and the loading bar will go upto 25% and then reboot again into recovery. No FAN spin as well...

Replaced RP800. Issue Solved.

Corossion at RP800 and QP800. No shorts. PPVIN_LCDBKLT_F/N/R/P is 12V LCD_BKLT_R is 12V But PPVIN_LCDBKLT_Q is 3V and decreases to 0V. Should we replace QP800 ?

Perfectly fine macbook was kept for resale. it had a trackpad issue. trackpad was replaced . it was working fine. today suddenly it wont turn on. Drawing 20V and PPBUs is at 12.6. Nothing heats up. Was following the power sequence PDF i had. I get voltage upto ALL_SYS_PWRGD. I get voltage at...

Device was water damaged. Corossion at the trackpad and lcd connector and at U7270. PPBUS at 12.6V Thermal scanning showing U7270 heating up. Replaced it. Still a very very very low heat signature on U7270. Still the same. no mouse click. intial fan spin for about 2-3 seconds then after...

Removed all one by one and put in smc bypass. its still the same. no change.

Big Coils pulsing now. if i remove U1950 they are stable. Once i put it back or replace it starts pulsing.

CC714 Voltage was pulsing. . Replaced. It is stable now. Still no 3v3_s2. Should i tru DFU revive or replace UC710 again?