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PPBUS_AON-20.5v PP3V8_AON-3.80v PP3v3_AON-3.294 Pls what next should I post

The fan spins normally and the CPU gets little hot. but no display no sound. 20v with charging current It’s not water damaged, no corrosion.

3.41v

On diaod mode is 0.002 Yes I think its good

After I have removed C6905/06 PP3v3_G3H- 2.23v/ 0.363 PPVIN_G3H_P3V3G3H-4.0/0.551 Still no 20v

Yes volume keys is working on the Touch Bar It’s a clean board

PPBUS_AON_3V3S2_VIN_ISNS was shorted to ground. I passed 3v through it and uc710 was getting hot, I replaced it, the shot was gone but it’s still not turning on. And it’s drawing charging current.

It’s a water damaged system, it has been given To another technician before it got to me. Both ports drawing 20v and the charging sound.

The system is working but no sound. I use the mic to record, there was signals but no sound when playing out. Pls help I have check around ur600 and ur630 no corrosion no shot. Then ur500 looks good.

The system came fresh and pp3v3_g3h voltage is low 2.6v instead of 3.34v No PPBUS_ G3H I found a low resistance on c7081, I ran a current throug it. Same c7081 gets hot. I replaced it and the resistance came up. But still 5v. I proceeded to replace u6903 and D6902. It draws 20v and immediately...

Yes PPBUS_G3H is 12.46V with charger alone Ohm scale on C7020 is 3.3ohm CC7023 is 2.9 ohm

It draws 20v 0.034mA on charger alone without battery I mean TBA_CSO_P diode mode resistance 0.438

The system works on battery only draws 20v on charger but no boot Battery is not charging even with 96watt charger C7020 resistance is 0.438 Q7065 not shorted and looks good Ppbus on F7000 with battery is 10.50v With charger 12.46v What can i check next ?

The board draws 5volts 0.0450A PPBUS_G3H=12.53V PP3V8_AON=3.8V PP1v8_S2=0.4v PP3V3_S2_UPC=0.5V P3V3S2_SW=0V resistance is 0.429 PP5V_AON=5V PP5V_BSTLQ_VOUT_SPMU=5V PP3V8_AON_SPMU_ISNS_VIN=3.8V PP1v25_S2=0v resistance 0.275 I have inspected it under thermal camera nothing get warm.. Logic board...

It’s has charged to 45% the last time I thought I it has been fixed, still charging until I disconnected the charger. Next morning not charging.it will now start charging until I disconnect and reconnect the battery terminals j5150

I must use oscilloscope? Can I use voltage on a multimeter

Yes. Known good battery, what I discovered now is that, when I installed another battery and I plugged the charger, it draws charging current and it’s charging but if I remove the charger and plug it back it will draw 20v but 0.00current and the system will working but not charging. Until I...

PPOV8_SLPS2R -0.798v PP1V1_SLPS2R- 1.10v PP1V25_SLPS2R_SN-1.25v PP1V8_SLPS2R-1.803v SOC_SLPS2R_RED- 0.04v SOC SLPS2R RED L7690 Pin2- 3.287v

After disconnecting and reconnecting j5150 it will draw charging current and it will charge the battery, but after a while like 5 minute, it’s will stop drawing charging current and withdraw the charging sign on the battery,but there will be 20v and the system will be working. But no charging...

That’s what I did exactly. It’s 0.00