Almost certainly not. A tube tester will not check tubes for this type
of problem.
Did you check any of the things I suggested when I replied the first time??
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Paul Gerhardt wrote:
Last night tested the tubes in my B&K 707 and found slightly weak
V7 6EH5 the AF output but speaker sounds good
V8 6HS6 Premixer
V1 6BZ6 RF Amp
All of these tubes test slightly weak but would this cause a sudden
loss of muting ability?
Message: 1
Date: Tue, 15 Feb 2011 14:02:26 -0500
From: Paul Gerhardt<[email protected]>
To: [email protected]
Subject: [Drakelist] R4B No Standby or Mute
Message-ID:
<[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
My B-line has been working but today that after hooking it back up
(was working on a TR-4) I noticed that the R-4b was not muting or
going into Standby.
In standby or ext mute (w/o short in RCA Mute)audio is distorted
RF Gain only raises S Meter to 20 over or so.
Something seems to have changed since I used it last a few weeks ago.
Could this be a tube failing or ??
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