[Amps] Clipperton-L question

[Louis Parascondola]

check your power supply diodes.  Simple task with a VOM on diode check mode.  If that is OK then remove all the tubes and try again.  If fuse does not blow then you have at least one bad tube.  Look closely for HV arcs to ground.  Check the safety choke.  That is what you need tgo check.



-----Original Message-----
From: Larry <lknain at nc.rr.com>
To: amps <amps at contesting.com>
Sent: Wed, Sep 11, 2013 7:37 pm
Subject: [Amps] Clipperton-L question


One day when I switched from CW to SSB mode on my Clipperton-L it blew the fuse 
with a good bang. The switch picks between a tap and one side of the power 
transformer secondary – tap being for CW. I forget but for SSB I think the power 
supply supplies 2500V(+/-) and somewhere around 2000V(+/-) for CW. Nothing 
obviously wrong  that I could see with just the covers off. I replaced the fuse 
and as soon as I turned the amp on it blew the fuse again. I searched the web to 
see if someone had seen this problem before and had written about it but I 
didn’t find anything.  I have had the amp since it was new (1984?) but I put a 
Harbach power supply board in it about 2 years ago. As a long shot I thought I 
might ask here if anyone had seen a similar problem before I try to troubleshoot 
this. 


73, Larry  W6NWS
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