Hi guys, I need your help. I own all the extender cards for all the cards in the central section and today suddenly the keys "flip", "vca to mon", "record", "replay", "mix", "cue" "omni" are dead. I tested everything on the cards and everything seems to be ok except for a strange fact: on the +18 rail on the back I detected a voltage of 10.79V on '20 and '21, from '22 on it is perfectly 18.50. This has never happened to me before. Could you help me? Thank you all!
Photo in attachment.