Originally Posted by MBronskill
The lesson: Don't trust those two solder joints even if they look good. Somehow the original soldering job was inadequate and even if the wires are firmly attached, the solder joint may not be conducting properly.
Yep, mine looked fine, but no worky. Added gorilla-globs of solder, and now *toasty hands*
Many thanks, leadingedge! If I was a better man I'd send you $50