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.
Carl
LK-500ZC owner since new in 86
----- Original Message -----
From: <w4foa@comcast.net>
To: <amps@contesting.com>
Cc: "W4FOA, Tony" <w4foa@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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