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Re: [Amps] Henry 2K-4 Failure

To: amps@contesting.com
Subject: Re: [Amps] Henry 2K-4 Failure
From: Mark - N5OT <r-emails@n5ot.com>
Date: Thu, 19 Mar 2020 19:31:09 -0500
List-post: <mailto:amps@contesting.com>
This is getting more and more exciting all the time.  Stay tuned.  So to speak.
73 - Mark N5OT

On 3/19/2020 5:45 PM, VE1DT wrote:

Hey Jim & Mark,

Stayed failed to me means that the sucker is welded.

How do I know this for certain ,you ask? My new AL80B became intermittent within the first few months after getting it. The grid meter was pegged negative at the zero end. After a few more times, it finally stayed failed. I pulled out the tube and measured a short on the pins of the tube. Easy peasy. I had a VOM, but no spare tubes to swap with.

I am sure there are intermittent cases out there as well.

--

Gerald, VE1DT

>/Grid to cathode short & ?stayed failed? means you just need an /

>/ohmmeter. No need to swap tubes, etc./

>

>/Gerald, VE1DT/

>

## Nope.  The  grid  to cathode  short  only  happens  with tube  fil

lit..... not  when  cold.

When cold,  both  a HI  pot  tester....  and  also  a megger wont  work

either.

Jim VE7RF


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