Hello everyone,
I have same problem like in this topic viewtopic.php?f=48&t=92026&p=913593&hilit=%2Au1000%2A#p913593

1) I replaced U100 - now i have PERSTB_BUF (3.3V - on 2pin of U1000)
2) I am missing VDDC_PWR_GOOD signal on 1pin of U1000
3) PWM controller IR 3567B - pin11 - PWRGD/VRDY1=0V, pin12 - PWROK/EN_L2/INMODE = 0V

So the solution is to change PWM controller IR3567B?
What i found, there is problem, that this chip is programmed so i need to take it from donor board, is it true?

Thank you very much!

Yes the vcore controller needs to be flashed or taken from a donor. Try giving power from LBP to pwr good and see if it works.

Thats your first problem. But "zero" step is MVDD - how it feels?