Thanks for the info, Garey. I was wondering the same thing a out my
R-4 A. The xformer certainly is toasty, even with all new electrolytics.
Steve Wedge, W1ES/4
Sent from my iPhone
On Mar 11, 2010, at 12:00, [email protected] wrote:
------------------------------
Message: 2
Date: Wed, 10 Mar 2010 15:15:17 -0500
From: Curt Nixon <[email protected]>
Subject: [Drakelist] Banned Server List?
To: Drake Forum <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
What is the status on the banned server list? Will we ever be able to
get the list mails again?
Thanks
Curt
on att yahoo
------------------------------
Message: 3
Date: Wed, 10 Mar 2010 15:25:21 -0500
From: Garey Barrell <[email protected]>
Subject: Re: [Drakelist] Banned Server List?
To: Drakelist <[email protected]>, Curt Nixon
<[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Curt -
I just got your post, and by definition you were able to post...??
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs
<www.k4oah.com>
Curt Nixon wrote:
What is the status on the banned server list? Will we ever be able
to
get the list mails again?
Thanks
Curt
on att yahoo
------------------------------
Message: 4
Date: Wed, 10 Mar 2010 17:41:20 -0800
From: Kevin LaHaie <[email protected]>
Subject: [Drakelist] 2C Hum
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Just picked up a 2NT/2C station that had sat in a (heated and dry)
attic
for 20 years. Very nice condition, 100pct original, a little chassis
corrosion but a very nice set. As always, I did a visual inspection
first, and then took all of the normal precautions when first applying
A/C to it.
On a variac, I brought up voltage slowly and by the time only 25vac
was
reached, a very loud hum appeared on the speaker and headphones. OK,
electrolytics (typical)
I replaced the 3 higher voltage electrolytics in the can with discreet
parts under the chassis, found one of the low voltage filter caps to
be
split so replaced that one (C48 I believe). All voltages appear
good on
the scope with normal ripple visible only with the most sensitive
setting on the scope (5mv)
Nothing reduces the hum, which is very loud. No controls affect the
output in any way, I removed all tubes, still the hum.
Doesn't appear on either of the 2 driver transistors, or the base /
emitter of the final output transistor, only on the collector and of
course the headphone and speaker terminals.
The scope shows a malformed AC waveform as the hum, so it's obviously
being amplified since the audio stage of this receiver is all solid
state.
So, output transformer? Audio PA transistor?
Hoping for some insight where to go from here!
Thanks
Kevin K7ZS
------------------------------
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End of Drakelist Digest, Vol 21, Issue 16
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