Spent a pretty good afternoon working on the layout yesterday. I finished wiring up a switched outlet. This circuit will turn on the relay power, turnout power and C/MRI power.
With that in place, it was time to plug in the relay power and test it for the first time in 22 years. I took my meter to it looking for 24VDC, but I kept getting negative values. Then it hit me, the panel must have originally been plugged into to an outlet on the opposite phase. The quick fix was to swap the blue and green leads going into the rectifier, on the right.
With relay power established, it was time to test the first panel that I just built. I connected the plus side to the fuse bank and used the ground side to touch to the control terminals. Poke, poke, poke, poke, poke, pop, and suddenly the first 20 units didn't work. Two fuses later, I had isolated the problem to number 6.
I pulled the relay, thinking it was bad, but then I noticed the problem. I have no idea how it happened, because these had been used in the past. That diode was installed backwards. Instant short. Flipped it the right way, changed the fuse a second time, and perfect.
After that, it was on to hanging more fascia. I started the lower deck.
I got half way around the curve before calling it a day.