Very strange problem ,when I press PWR button coming 3.3 ALW but does not swich on ,in schematic should be always not after pressing PWR buton, I have change multi controller also ec and main bios ..+5V_SUS coming after pressing pwr button ..I notice on eight leg of main bios no 3.3 volt ..What to check more?

acav_in ?

17 v ac in

See the schematic diagram.
I asked about acav_in.

0.480v is voltage

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Posted after 12 minutes 20 seconds:
ichange know ic and it came 3.3 ale but no 5v sus i will now reflash bios and ec

Must be 3V.
Check pins pu4.

now after reflash i dont have 5v sus on