Chuck wrote:
============

I appreciate this too. Further investigation on my part might shed
light on a cause for both of my dimmer failures: too high of input
voltage! Even though advertised as 12-24VDC input, I tend not to trust
this figure and, after looking at the components inside, I think it's
12V, period! Unfortunately, the driving supplies I had been using for
this were more like for standard Ham radio, 13.8 VDC. Perhaps this
higher voltage could not be handled by the dimmer components.

** You have an obvious overheating failure of one mosfet in a parallel pair.
As mosfets heat up, the on resistance increases by a factor of 2 or more.
So the temp rise does as well.
Having no heatsink at all in that device is nuts.
Bad design, buy something else.


....... Phil