[Drake] Need R4C help

Sun, 10 Feb 2002 06:36:07 -0600

Jim, another posibility is a shorted tube.  Seems to me I recall having
encountered instances of inter-electrode shorts resulting in loud buzzing.
Filament (with A.C. on it) shorts to cathode, for instance.

Dan W. Dooley  WB5TKA  Bedford, Texas
    e-mail to: [email protected]
    Web site: http://www.qsl.net/wb9tka
May Goddes love blest ye alle
"Ancient Pistol, I do partly understand your meaning."

----- Original Message -----
From: "Jim Pruitt" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Sunday, February 10, 2002 12:12 AM
Subject: [Drake] Need R4C help

> My R4C decided to bite the dust last night.  I leave it on all the time
but
> in standby mode when not in actual operation.  It suddenly decided to
start
> playing a very loud buzzing sound in the speaker even though it is kept in
> the standby position when not in actual use.
>
> I have opened it up and see no crispy critters but have not measured
> voltages yet.  Power supply is definite suspect.  I seem to remember this
> having been discussed on the reflector before and the suggestions were not
> the power supply.  This 17K serial number has had no mods done so still
has
> the original power supply and audio amp.
>