----- Original Message -----
From: "Roger Smith" <kc6...@earthlink.net>
To: <drakelist@zerobeat.net>
Sent: Monday, January 21, 2013 12:06 AM
Subject: [Drakelist] T-4XB won't do CW
I have matching R-4B and T-4XB. Both were fully functional
until I moved them to a new location in the shack. Now I
can't get CW to work. I have checked all the cable
connections and the straight key I am using. The cables
are correct and the key works in another radio. I
rechecked the vox and delay settings and they are in the
correct positions. Tuning and SSB work with full power
output. What is the next step I should take to troubleshoot
this problem? Can this be caused by a bad tube? I haven't
re-grounded the twins since the move. Could that be a
problem?
Thanks for the help,
Roger
First thing is to take the case off and reseat all the
tubes. I would clean the tube pins and sockets with Deoxit
and a small brush. I've had this happen, don't remember
exactly which tube caused it but even just wiggling the
tubes in their sockets will sometimes fix it. The other
voodoo is working the screws to make sure they make good
chassis contact but I suspect the tubes.
--
Richard Knoppow
Los Angeles
WB6KBL
dickb...@ix.netcom.com
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