Oops - Just noticed an error in my previous post. If it matters, the
plate current started 60 secs after power-up, not warmup. (and it
was resolved by replacing with another tube, so it's nothing in the
amp)
On 7 Jun 99, Barry Kutner wrote:
>
> Greetings all:
>
> I just removed an 8877 from an Alpha 77Dx which had developed a
> resting plate current reading of abt 300 mA, beginning abt 60 secs
> after warmup, and continuing till abt 3 minutes.
>
> Now that the tube is out I see it has one of those ill-fated date
> codes of 1988.
>
> Does Eimac have any kind of replacement policy for tubes of 1986-
> 1988 problem era?
>
> Tnx/Barry
> --
> Barry Kutner, W2UP Internet: w2up@mindspring.com
> Newtown, PA FRC alternate: barry@w2up.wells.com
>
> --
> FAQ on WWW: http://www.contesting.com/ampfaq.html
> Submissions: amps@contesting.com
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>
--
Barry Kutner, W2UP Internet: w2up@mindspring.com
Newtown, PA FRC alternate: barry@w2up.wells.com
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
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