I have finally got the Centurion working again. Thanks to all for the
trouble shooting suggestions. KA4AUW (Ron) gets the prize. He was
right on saying it probably is the HV transformer followed by one leg
the diodes. That's exactly what it was. The primaries of the
transformer had continuity, and 5 diodes were bad. What went first,
and what caused it, is a mystery to me. Tentec seems to think a line
surge or lightning strike was the cause. There was no visible
physical damage, nor was anything else fried. Remember I had not used
the amp for 6 months, and when I turned it on in standby position the
fuses blew right away. The tranformer cost $160 w/ return, the diodes
were provide free. Thanks again. Now back to work on my 2nd SB-220.
73 Denis, W4DC, VP2MFM
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