The unit worked fine until very recently, when it started to blow fuses just a few seconds after it was powered up.
I followed the troubleshooting guide on page 9 of the Dynakit owner's and installation guide, as well as Curcio Audio's troubleshooting guide, and determined the cause was not the 5AR4 rectifier tube. (If you remove the rectifier tube, the fuse will not blow on power up).
The quad cap can it where I moved next. The can was old and did not provide readings within proper spec when checked with my DVM, so I ordered a new 80/40/30/20 can from Dynakitparts.
I installed the can as the schematics provided illustrated but neglected to test the can prior to installation.
When I powered the unit up, It again blew the fuse.
The resistors (22,000 and 6,800) on the cap can both check out within spec.
All connections to the can appear solid and I could find no shorts. Readings at the terminals on the new can are not within spec. Two terminals read low OHMS, the remaining two read zero. I may have overheated the unit when soldering, or the unit may have been bad out of the box. Not sure, as I did not check it prior to installation.
I have performed Curcio's test for the main power tranny and it passed the short test.
I checked voltages across all points listed in Curcio's Transformer troubleshooting addendum. Voltages are all within spec.
I am in the process now of tracing all wiring and comparing it against the schemo and the wiring diagram.
I am also planning on checking the choke in the process.
Does anyone have any other ideas or thoughts? I am new at this, have very little experience, but I really want to learn.