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Came in with little bit corrosion on the upper side. Fan turns on for 1 sec, then turns on again for about 15 sec then turns again and it does't stop but no post.
L7310/L7320 = 1,7V
Have tried another U6100 but all the same.
"little bit corrosion on the upper side"
PLT_RESET_L goes high?
Any previous repair attempt done?
Check all SPI Bus Series Termination resistors and their traces.
I suppose you don't use J6100, remove it.
And try known good working clean ME BIOS; links posted on the forum for sure...