The far right fuse looks a little different, but doesn't really mean anything.
Saw one thread on diyaudio regarding these, something about loose RCA grounds:
Seeking help- something caused HUGE noise - diyAudio
Do you have a meter, but just not there? At a minimum I would check the DC offset on both inputs if you have access to a DMM. And I have gotten schematics for free from Adcom just by asking them via email (if it comes to that).
EDIT: A bit of info in this thread as well (see post 34)
http://www.diyaudio.com/forums/solid-state/56735-adcom-gfa535-bad-transformer-3.html
And follow Doug's advice