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tried with flux, no joy. Thanks anyway

U7840 pin 1 0.013v pin 3 0v i replaced it and same measurements

0.331v

1V05_SUS 0.013v pch yeah?

PM_SLP_SUS_L 0v voltage 0.550v diode mode

U8130 pin 1 3.3v pin 2 0v pin 3 2.66v pin 4 3.293v pin 5 0v pin 6 0v I tried to replace U8130, still same, voltages same, checked R8133 is correct value

PCH_INTRUDER_L 3.048v PCH_INTVRMEN 3.222v

PPVRTC_G3H 3.318v PCH_CLK32K_RTCX1 0.437v PCH_SRTCRST_L 3.311v RTC_RESET_L 3.311v these?

23 - 8.58v 12 - 3.4 13 - 2v 22 - 3.292v 29 - 5v 21 - 3.4v

3v3_SUS on C1204 is 0v 3v3_S5 on C8020 3.317v PM_BATLOW_L 3.389v PM_PWRBTN_L 3.389v PM_RSMRST_L 0v PM_DSW_PWRGD 3.400v PCH_DSWVRMEN 3.221v PM_PWRBTN_L goes from 3.388v to 0.347v

I have 2 boards with same issue 820-00165-a and 820-3437-b. They both are drawing 150ma from power supply. I checked q8150 - only voltage that is present there is S0PGD_C and it is 3.285v I replaced Q8159,R8153,R8156,R8154. Measured all rest near by resistors for their values against schematic...

"Can i get info on how to do SMC bypass correctly? I struggle to find legit source anywhere how its done, as far as i find out yet it is done by holding the power button and inserting a magsafe cable? If yes, then nothing happens. " Highest pulse i get on CPU_VCCST_PWRGD is 0.34v Highest pulse...

highest peak i get on pin 3 of U1950 is 1.35v

sorry, i understood that i have to short(trigger) pin 5&6 at U1950 and then measure pin 3. I have to solder a wire between 5&6 and trigger SMC_ONOFF_L while measuring pin 3? Correct?

"Make short between pins 5 & 6 of U1950 and check for pulse at pin 3." at pin 3 there is 0v even if i short pin 5&6. i get constant voltage of 0.03v on Pin 2, is that ok? Can i get info on how to do SMC bypass correctly? I struggle to find legit source anywhere, as far as i find out yet it is...

on L7320 highest peak is 0.32v on L7310 highest peak is 0.31v SYS_PWROK_R is 0v does not pulse if trigger SMC_ONOFF_L PM_S0_PGOOD is 0v does pulse if trigger SMC_ONOFF_L from 0v to 1.38v highest

S4_PWR_EN goes from 0 to 1.17v I rechecked L7630 and L7520 for pulse, found that i was failing to short R5116 first time. L7630 goes from 0v to 0.53v L7520 goes from 0v to in between 0.53v to 2.2v, (could be 1.2, sometimes 1.7, sometimes 0.76)

i double checked, was measuring wrong resistor. PM_SLP_S4_L goes from 0v to 1.47v I checked at L7520 - no pulse L7630 - no pulse

PM_SLP_S0_L goes from 0.03v to 1.4v for split second PM_SLP_S3_L from 0.00v to 0.70v PM_SLP_S4_L goes from 3.3v to 0v PM_SLP_S5_L stays at 3.29v

when i trigger SMC_ONOFF_L voltage on PM_PWRBTN goes from 3.35v to 0.32v.