Hello all:
I had disassembled my previously operational KX1 (SN854) in anticipation of
adding the KXB3080 option. However I realized that it would be some time
before I could get around to it, and I felt like operating. So I put it
back together, powered it up, and released the smoke.
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From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Paul T. Rubin
Sent: Friday, September 08, 2006 9:06 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KX1 Fire Sale
Hello all:
I had disassembled my previously operational KX1 (SN854) in
anticipation of
adding the KXB3080
Hi, Paul!
Sounds like a tiny metal burr is shorting the case of Q6 to ground.
These are almost always at the screw hole. Check the following:
1. Make sure the screw itself is plastic; Elecraft will send you a
new one free if it isn't.
2. Pull off the insulated pad and use an Xacto
I'll add to Brian's comments that it does not always require a burr to
produce the short.
In some KX1s either the head of the screw is a tiny bit smaller or the hole
is a tiny bit larger, allowing the beveled screw head to reach through the
hole in the cover and thermal-conducting pad and touch
Thanks to all who responded.
The archive provided a wealth of information on this well-known problem.
I spoke with Scott at Elecraft and he is sending me a nylon screw.
He told me that there had been a Builder's Alert on this problem in the
past, but he was also unable to find it on the web site.
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