RK Henderson wrote:
I've got an NCX-3 HF xcvr with a fried power supply. The rig's PS
snip

Is the transformer of your power supply smoked?
(I assume it's the National a.c. supply type NCX-A).
If you are lucky, you may just have a bad
electrolytic capacitor causing fuses to pop immediately.

If the power transformer is still OK, the rest of the power supply
should be reparable.

73,
Ed Knobloch