[Amps] Strange relay problem Alpha 76

[Radio WC6W]

Hi Carl,
 Perhaps, a shorted turn?

73 & Good morning,
  Marv WC6W

http://wc6w.50webs.com/


--- On Sun, 11/16/08, Carl <km1h at jeremy.mv.com> wrote:

> From: Carl <km1h at jeremy.mv.com>
> Subject: [Amps] Strange relay problem Alpha 76
> To: amps at contesting.com
> Date: Sunday, November 16, 2008, 4:40 PM
> Ive not seen this failure mode before and wonder what causes
> it.
> 
> The Power On relay is a simple DPST 120VAC job. It all of a
> sudden 
> started buzzing with the amp in standby.
> 
> Pulled the coil leads off and hot wired and it still
> buzzes.
> 
> Fired off the DC supply and it works just fine on 120VDC
> now, no 
> overheating.
> 
> What gives? I understand the construction difference
> between AC and DC 
> relays, coil impedance, etc.
> 
> Carl
> KM1H
> 
> 
> 
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