I agree, however Vern wrote he had to replace C17 in both his faulty QCXs… it could be a coincidence, but what are the odds of that?
One could ask why no-one else has reported that problem? I wonder what would happen if it were faulty, open or short circuit, what would be the symptoms? I'm not an expert but I think either way all that would happen is that the filter would not be so effective.
