Re: [Elecraft] Latching relays

2007-06-26 Thread Don Wilhelm

Fred,

I certainly will not disagree with your success, nor that the epoxy will 
provide a good seal.


BUT, you were fortunate that the relay did not have any internal damage. 
 When the case of a relay is melted (even a small amount), there is a 
chance that the inside of the plastic can be distorted and will 
interfere with the movement of the contacts inside the case.


So now you know the reason I would day to replace the relay - it is the 
'safe' answer and will work in all cases.  It is difficult to discern 
whether internal damage occurred or not.  So try patching the case if 
you prefer, but do be aware of the other consequences.


If you do use some sealant, watch out for the thin sealants that may 
migrate inside the relay case and coat the contacts - if you find that 
it worked before you sealed it, and does not work after the sealing, you 
should relate those two events, so say 'AH S**T' and simply order 
another relay.


73,
Don w3FPR

Fred (FL) wrote:

Hi - I did the same soldering-iron corner meltdown,
on my K2 #54xx.


SNIP


I know Don won't agree with me - but I'm quite
positive - that this epoxy-over seal, is darn
near as tight and solid as the original case.
Its probably better material than what they make
those latching relay cases out of!  One would
need a chisel to break it loose.  And it is as
sticky, as sticky can get!

Good luck -
PS - pretty much any quality, A  B Epoxy Adhesive
will work.  I just happen to have all these bottles
of golf club shaft stuff


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Re: [Elecraft] Latching relays

2007-06-26 Thread Bill NY9H

At 07:04 AM 6/26/2007, Don Wilhelm wrote:

BUT, you were fortunate that the relay did not have any internal 
damage.  When the case of a relay is melted (even a small amount), 
there is a chance that the inside of the plastic can be distorted 
and will interfere with the movement of the contacts inside the case.



After a k2 and several tuners, and several KA amps...i must admit I 
thought it was
a requirement to have a solder burn on at least one relay case. (mojo 
you know).


Guess it matters if it is a burn or a melt,, or what does the 
word IS really mean.


73,

bill   ( can you tell I'm waiting for my k3) 


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