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Liquid spill can affect the BIOS even if it didn't get liquid on it? Can you explain?

ok, will try that.

So I have o nthe bench an 820-00165 that the customer said he took to another shop and they said there is a problem with the power distribution on the LB. I was like what?! never heard that before. I checked it out and asked for history and he said his daughter was using it and it just stopped...

It is present

Reballed PMIC and no change.

PMIC_EN_P3V3S5 = 3.28V I will check resistors and if they are all good, will reball PMIC.

Ok, so all of the outputs seem to be there, PP3V1_RTC IS 3.1 volts

I'm not sure which signals are important

Does 530 Ohms on PP3V3_S0 seem low? I don't have another board for reference, besides an 820-00875 that is a donor.

ok, yeah it is present

on PP3V3_S0 I have 500 Ohms to GND.

R7835 was broken after replacing: PM_DSW_PWRGD - 0V PCH_INTRUDER_L - 2.8V PP3V1_RTC - 3.08V RTC_RESET_L - 3.08V PCH_SRTCRST_L - 3.08V PPDCPRTC_PSH - 1.1V

PM_DSW_PWRGD - 0V PCH_INTRUDER_L - .398V PP3V1_RTC - .398V RTC_RESET_L - .398V PCH_SRTCRST_L - .398V PPDCPRTC_PSH - .340V

you actually asked 4 questions. Answer 1. Because there was flux that may have gone under U7800 because the cap I replaced was right above it. Answer 2. Yes I used the sweep function Answer 3. I dried for 1 hour Answer 4. I was getting PP3V3_S5. When I search for SUS I don’t see anything...

no pp5v_s5 either

Seem to be missing PP3V3_S4 an PP5V_S4

yes

So I have an 820-00840 that is not powering on. It was working, just had a couple corroded capacitor ends so I touched them up and UC'd the board. It now draws 0A @ 20V, but had PP#V# and PPBUS is 13.1V. Not sure what the heck is going on. Any suggestions?

Ok, will report back.

On the table I have an 820-00840 from a 2017 13" MBP. There was definitely some sort of spill in the back.no liquid on the LCD connector, just some sticky stuff on the heat pipe for the CPU by the fan, and on the edge of the board by U2800. One USB port is showing 5v @ 5mA and the other shows...