Ultimate Chorus reverb problems

[kxvet]

I am trying out a Fender Ultimate Chorus amp. Both channels are great....unless I put any reverb. I get a loud hum
, both channels...any suggestions?

[Jazz P Bass]

#1: check that the reverb pan cables are good & inserted in the proper connector (Input / Output).
#2: check that the reverb pan inductors have continuity at the jacks.

[Jazz P Bass]

Fender Ultimate Chorus Schematic

There are a number of items you could check with a DVM.
#1: check that the reverb pan cables are good & inserted in the proper connector (Input / Output).
#2: check that the reverb pan inductors have continuity at the jacks.
Low resistance on the Input coil & a higher resistance on the Output coil.

After that, it's circuit time.