[TenTec] Omni C + new Ham = Oops.

[Mike Bryce]

One of the few times in life that size really does matter


Mike Bryce, WB8VGE
 the heathkit shop
SunLight energy systems
J e e p
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On Oct 16, 2013, at 5:07 PM, Richards wrote:

> 
> 
> On 10/16/2013 2:25 AM, Ken Brown wrote:
> 
>> 
>> You want to get in, melt the solder, and wick it away quickly, and get
>> out before you cause a lot of damage.
> 
> _______________________________________
> 
> 
> 	Amen, Bruddah.
> 
> Hard Lesson No 92874.
> 	
> I learned that the hard way when replacing a faulty IC that came in my TT Model 1254 receiver kit.  TT sent me a replacement chip saying they had a lot of lousy chips, so that part was easy - but I used too small a conical tip, and heated the board too long removing the old part, damaging a couple of the solder pads.
> 	
> I am lucky because a really good friend who builds prototype boards for exotic experimental weapon systems sorta owed me a favor from something I helped him with... 	systems.  He reworked the board, and fixed the damage as a return favor.  Next time, I suppose it will cost me a bottle of really good bourbon!  And that can get real expensive!
> 
> But everything said in his thread reminds me of what he told me.
> 
> I guess one of the take-away points is: MASS - it is all about mass and
> a large enough tip will have enough mass to pass a lot of heat quickly.
> 
> I thought a smaller tip would mean I was confining the heat to a small, concentrated area - wrong - there was not enough heat to do the job quickly - so the the board suffered.
> 
> Lesson learned.   	
> 
> -----------------  K8JHR -------------------
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