[TenTec] Centurion 422B

[Stuart Rohre]

I once had a low powered rig that developed such an arc over in standby, 
and it turned out to be a burned out place in the potting of the high 
voltage transformer winding.  It would arc to the metal can in which the 
transformer was potted.  A cure suggested was to heat up the transformer 
(removed from rig) on a hot plate to remelt the tar and then to test for 
the fix.

But, usually, this symptom is dust accumulation within a linear upon 
various insulated parts.

-Stuart Rohre
K5KVH