If I understand you right, you still have the rectifier in circuit. Do you have an Ohm Meter? Why hasn't anyone suggested using an Ohm meter?
Tip Top TV
Win, the power supply has been repaired and is working fine. The original KBPC2502 bridge rectifiers are sitting on my desk; I replaced them with two KBPC5010's from a recent hamfest. K8AXW (and probably KD8DEY) explained how to test the originals with an ohmmeter, and I'll do that just for curiosity. But this little adventure is OVER!
Edit: Win, I should add that I very much appreciate your willingness to share your expertise (expertise I obviously do not have!) and the time and thought you devoted to your advice. The fact that the PS is now working doesn't change that in the slightest!