820-3435 board fan spin all rail there , no external disply or turn on


got this mac air with 820-3435 board , fan spin , all power rail is there, cpu voltage is there, it might have slight liquid damage, copper round pad are slight discolour, all rail have power, PPVRTC_G3H there,

only missing power rail is l3095, and L7701, cpu turn hot, , All_pwr is good, any idea what is wrong ?

when i connect or turn on board usb blink once , also i notice, Y1915 PCH_CLK24M_XTALIN, and CH_CLK24M_XTALOUT ohave .374v ... are those Volt correct?