I have a Cit 24 - almost the same amp. These were made into the mid/late 80s and if it's had regular use, it's not the caps. (these don't have a lot of 'big caps' in general, not like a vintage tube amp built with electrolytics ala CJ et al. ) Mine works fine, but I'd look for something that spontaneously failed (resistor?), likely shorting an output or something which draws current enough to trip the mains fuse. Need a tech to look at it really, there's a lot of circuitry in there and barring obvious burned area or something, it's not a piece that is easy to troubleshoot w/o real test gear.
Good luck, it's worth getting it fixed. If not, email me - I'd be interested in it.
-Ed
Good luck, it's worth getting it fixed. If not, email me - I'd be interested in it.
-Ed