It's not this problem. You need to check whether there is 3.3v S5_ENABLE. If it's there and PSL_OUT is 1.5v then you could use this trick to turn on 3.3v for KBC AUX. If the S5_Enable signal is missing please check it first.
@AzZy_OfficialАй бұрын
dell 3543 no power, no indicates do nothing ( Power IC heatup ) location pu4402 , pu4201 , ( pub208 under gpu both ic)