What is the most likely fault scenario?

What should I check next?


wire yourself up a dual outlet box with a line cord an on off switch and a duplex outlet.

Cut the tabs on the outlet and wire the two sections in SERIES.

Plug your UUT into one outlet and a 60 Watt incandescent lamp into the other outlet.

Now you can troubleshoot. If there is a short, the light will limit the fault current.

Also beware using a scope that the ground in your circuit may be live.
I would buy or make an isolation transformer as well for your safety.

Replace the FET and cap and turn it on with the 60Watt bulb in series.

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