[Amps] Centurion Amp

[n3nd@aol.com]

I've owned a Ten-Tec Centurion (422B) for 2-1/2 years.  Ten months ago, 
its HV transformer developed a 1.5k ohm short between the two primaries 
and was replaced by Ten-Tec (at my expense).  Now the same thing has 
again happened (and again it's a 1.5k ohm short).  Both times the 
step-start resistor fried as well.  Amp is wired for 240V.  Any ideas 
what may cause this?  Is it just plain bad luck?

Dan -- N3ND