Well, it wasn't a mismatched load and after replacing the tubes and the
suppressor
resistors, it fired up just fime. No question that it has been a workhorse tube
for mny, mny people/years.
73, Tom - WA2BPE
Pete Smith wrote:
> At 03:57 PM 8/22/02 -0400, WA2BPE wrote:
> >...Had this happen to me with an old SB220 destroying one tube; luckily (??),
> >they were about to be replaced anyways. Later investigation showed that the
> >resistors in the parasitic chokes had increased between 5 & 10x their
> >original
> >value. I was "fortunate" - only the tube arced with no other damage.
>
> Which "this" is that? A parasitic, or a random grid/filament short, or
> arcing due to a mismatched load, or a Rocky Point arc? There are lots of
> things that can happen with a manually tuned amp, and I'd be more inclined
> to look at other things to blame besides a workhorse tube that is probably
> in more amateur amps than any other...
>
> 73, Pete N4ZR
> Sometimes a tower is just a tower
>
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