WFCO Converter

MEXICOWANDERER wrote:
WFCO - the Lucas Electrical of converters. Unless MAJOR revisions are done inside the converter the design itself tortures components.

I mostly agree, except for the "major" part. The failures I've seen personally are all the same. There's a pair of power resistors electrically in series and physically side-by-side that get too darn hot, resulting in one of their solder pads either melting or fracturing, along with possible heat damage to the circuit board. A rather minor (in the big picture) physical change could fix this, as could a circuit change to cut the power flowing through the resistors. I've read of other types of wfco failures that I wouldn't be able to evaluate. Compared to the many wfco failure reports, I can't off the top of my head recall even one failure report for a switch-mode PD or Parallax converter, with the possible exception of a fan failure.