[Elecraft] K3 with subrx - intermittent main RX problem and pwr out

[Alan. G4GNX]

Matt.

You are not at all thick. We all have to learn somewhere. The only time you 
could be considered thick is if you never asked the question. :-)

The wiki/dictionary description of dry and cold joints describes slightly 
different observable effects but to all intents and purposes a dry or cold 
solder joint will produce the same result. Both usually result in a breakage 
of the bond between the two components that are soldered. The simple 
solution is to re-solder the joint using sufficient heat to melt the old 
solder. You can either remove the old solder and apply new solder, or you 
can add a little flux when you heat the joint. I would prefer to remove the 
old solder and replace it with new flux cored solder. If you haven't done 
much of this type of work, probably the easiest way to remove old solder is 
with some "solder wick" which you can purchase for pennies on eBay. Place 
the wick braid on the solder to be removed and apply a hot soldering iron. 
The wick will soak up the solder and if it doesn't remove it all first time, 
re-apply the wick a 2nd or 3rd time.

One thing you ABSOLUTELY MUST do before you start ANY work inside your rig, 
is to observe ANTI-STATIC precautions. Use a wrist strap specially made for 
the job and preferably use an anti-static mat. DO NOT EVER connect yourself 
directly to any anti-static ground source - you could DIE!

73,

Alan. G4GNX

-----Original Message----- 
From: Matt Zilmer
Sent: Thursday, May 4, 2017 5:43 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 with subrx - intermittent main RX problem and pwr 
out

Sorry to be thick....  Is a dry joint same as a cold joint?

Thanks and 73,

matt W6NIA