Steg K1.5000 turn on issue

Steg K1.5000 turns on only at the the third time remote is applied.
So I apply the remote once, goes into protect, wait 1 sec, apply second time goes into protect, apply the remote third time - amp plays just fine.
I will try to see if the rails are building up evenly, but besides that no idea what else could cause this.
There are two trimmers on the PS board, those seems that somebody messed around with ? Any idea what are they for ? Soft start delay and maybe setting the PS frequency ?
 

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