I recently broke the 1st rule of electronics - "Never Let the Smoke Out". This picture shows my MFJ-705 Low Pass Filter, which decided to misbehave during a recent PSK31 transmission. The odor was intense, not just a smoky smell but a seriously awful chemical olfactory offense which somehow managed to infiltrate the entire house.
I have not figured out why this happened as the 705 is rated for high power (2500 watts) and I was only running about 50 watts. Sure, the PSK signal is continuous duty, but it doesn't seem like that should cause it to melt.
So I guess I will be testing out the famous MFJ "No Matter What" warranty. Meanwhile I'll just be grateful that the whole shack didn't burn down!