RJ,
Thanks for doing this thread, it was a big help -- it indirectly helped me solve the problem.
Background:
Last year I got 2x AetherIIs from the first coop. One I got to work without problem. The second I tried a number of things without success, and I put it off to the side when I ran out of time before Christmas show.
Problem AetherII from first coop: STEADY WHITE
I have reexamined all of the solder points -- now with a visor.
I reprogrammed the PIC, first with the latest firmware... and after the problem I loaded the test firmware to the same effect. I verified the checksums multiple times with each firmware load.
I checked all resistors, the LD33, 7812, 7805, and the LD33 identification and orientation.
I checked the direction on the 485, PIC, rectifier, and the 6800uf capacitor.
I tried with DMX attached, and also without DMX connected.
Each time I turn on power, I get a steady white light.
Looking at troubleshooting1.jpg I did voltage tests with the switches both flipped to the right (towards the LED and the center of the unit):
There was no short on the Man(ual) pins.
I did find a couple anomalies with the voltages:
voltage across the .1uf capacitor reads .237V (not 3.3V) !!
voltage across the LD33V does correctly read 5.0V. MORE ON THIS LATER!
When I tried to jumper the control pins against the upper capacitor's ground -- it had no effect.
When I tried to jumper the control pins against the LD33's ground -- I started to see LEDs go off!
I happened upon the source of problem... while placing my probe against the LD33's ground peg without having the other end of the probe unattached to anything I started to see the test program cycle throught colors!!
Despite seeing solder on BOTH sides of the board on the LD33's legs, it turns out that I didn't have a good soldered connection. I added some solder and I was finally in business!
Thanks for the helpful advice, the test points and voltage levels. While they didn't directly solve the problem, it was leading me in the right direction.
I am providing this detail to help someone else that might also have a soldering problem with the LD33... it might save a foot-shaped hole in the wall.

