[R-390] Advice on Replacjng Components

[Jerry O. Stern]

Dan

That sounds like a perfect solution to my concerns.

Thanks
jerry

-----Original Message-----
From: Dan Merz [mailto:mdmerz at frontier.com] 
Sent: Tuesday, January 11, 2011 1:38 PM
To: 'Jerry O. Stern'; R-390 at mailman.qth.net
Subject: RE: [R-390] Advice on Replacjng Components

Jerry,  if you want to rejoin two butted wires,  wrap a small coil of wire
around a small cylinder, and then slip the coil over one of the ends to be
soldered and then back halfway over the other end and solder the coil to the
two wires to be joined.  You can use bare copper wire or tinned copper wire
to make the small coil,  maybe slightly smaller wire than the wires to be
joined and wrapped over a cylinder that is about the same diameter as the
wire to be joined.   The result is a little "lumpier" than the original but
provides a better mechanical grip than just soldering the butted ends of the
two wires together.  Unsoldering is always an option over simply cutting the
wires to check but takes more time and practice to not damage other
components when unwrapping soldered leads.  If the leads are really short,
the coil technique may not work.  At one time,  I had some manufactured
coils that were made for this purpose but I'm not sure whether these are
still available or not.  It's simple to make your own in any case.  Dan.

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of Jerry O. Stern
Sent: Tuesday, January 11, 2011 10:01 AM
To: R-390 at mailman.qth.net
Subject: [R-390] Advice on Replacjng Components

When you have a suspected leaky mica or ceramic cap or an out of spec
resistor - do you always remove it or do you clip one end and test it?  To
remove all suspected components seems like a major time consuming task.  I
have heard many clip one end to test especially in tight places. My question
focuses on the techniques used to resolder If the component turns out OK.
Do you juxtaposition the cut ends and just put a glob of solder?  Most
passive components don't have sufficient extra leads so I am very interested
in learning from the wisdom of the group.

 

Thanks

Jerry

 

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