At 11:40 AM 29/04/2007, you wrote:
>Hello.i am a SB220 owner.i just got it to work.clean it upp and all.
>after 4 years.but somthing is wrong i get 550 W output?... and when
>i try the 3-500z each in single use i get 550w out on a single tube
>?.and when i install then both i still get 550w..someone?
>
>best regards from sweden
>
>SM7TVJ
Does this happen with both tubes (does it matter which one you
use when you test it with a single tube?) The obvious answer is that
one tube is soft or completely dead, and the other one is good, but
that is a very simple answer. I suspect you have already eliminated
that possibility and the problem is more complex.
73/DX Paul VE1DX
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