[Amps] Could Use Some Advice

Carl km1h at jeremy.qozzy.com
Tue Jul 11 20:41:54 EDT 2017

The HV comes on with the power switch.

It sounds like a shorted tube, try one at a time or none.

If still broke there are other suggestions.

LK-500ZC owner since new in 86
----- Original Message ----- 
From: <w4foa at comcast.net>
To: <amps at contesting.com>
Cc: "W4FOA, Tony" <w4foa at comcast.net>
Sent: Tuesday, July 11, 2017 8:01 PM
Subject: [Amps] Could Use Some Advice

> I have a sick Amp LK500-ZB and would welcome any advice and suggestions 
> about how to get it back to life.
> The problem/symptom is when I turn the Amp on, within 1-2 seconds, the 
> plate current shows approx. 300 ma, with no plate voltage applied.
> I suspected it might be a relay problem and ordered and installed a new 
> relay...symptom exactly the same.
> Beyond that, I have not tried anything and that is my request for 
> suggestions.
> Thanks for your help.
> 73
> Tony W4FOA
> PS: Last year I replaced the filter caps, Zener, plate choke and new 
> 3-500ZG tubes. All worked well up until now.
> Watch your thoughts; they become words.
> Watch your words; they become actions.
> Watch your actions; they become habits.
> Watch your habits; they become character.
> Watch your character; it becomes your destiny.
> Frank Outlaw
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