If you have power at the service outlet but no power at the rectifier board at all, it's likely going to be the main cabinet AC fuse (Fuse F6, 3A slo). The line filter, VR, service outlet all are before that fuse. If it's not that fuse, then I would ensure you're getting 120vAC at the transformer, then unplug J1 and J3 from the rectifier board and redo your testing of the test points.