Dover Swing Door/card rak/ OILDRAULIC

Dover OILDRAULIC.
2 stop hydro.
4 cards slots.
Blew F7 fuse, 3amp.
IN3 WHICH IS 24vdc power relay, may be causing problem. Changed relay then blew fuse again today. I'm picking prints up friday from another job.
Any idea.
Thanks.

Rectifier #2

I show fuse 7 feeding Rect. 1, this is also on the PC side. I'd start by checking rectifier. After that it's the old way, couls be switches. Be aware I've had spiders cause this. Hope you know how to circuit trace by halfing, could be a long day.