820-00165 MACBOOK AIR A1466 no green light to no power

roy.ruan

New member
hi,
working on a liquid spilled 820-00165.

coffee spilled on board, minor spilled on the clock circuit,SMC, bios.

cleaned the stuffs and replaced all nasty stuffs.re-flowed SMC. ultra-sonic cleaned

originally no green light, now green light back on.

3v42 is good, ppbus g3h around 8g good.
pp3v3 s5 is good
pp5v_S5 is good

PPVRTC_G3H 3.3V
PM_RSMRST good, 3.3v
on/off_smc 3.3v

no pm slp s5, no all_sys_pwrgd ,u1950 had been replaced.


where should i start and look for please?

thanks
 

dukefawks

Administrator
Measure on L7520 and see if there is a short pulse when plugging in the power. It is probably power cycling. Best to use an o-scope for this.
 
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