Re: [neonixie-l] Re: Nixie Clock Cool Project- a few questions

Sat, 11 Oct 2014 10:27:07 -0700

As a side note I've had a ""soldering iron"" in my hands since I was about 10 ish and I'm now 67. My dad did not have much in the way of tools, much less any soldering tools, but he did have an assortment of screwdrivers, who doesn't? (Anyone see where this going yet???) I would sit at the kitchen table, screwdriver tip resting in the flame of one of the burners on the kitchen stove, and when it got hot enough would do my soldering. Thanks for bringing up the fond memories. Oh for the good old days. LOL Ira. 


On 10/11/2014 9:56 AM, 'threeneurons' via neonixie-l wrote:

Because most of the guys, that have responded, had soldering irons in 
their hands, when the only place they had hair, was on the top of 
their heads. The solder traces, and solder mask, can get a little beat 
up during a "rework". Also the excess of chemical residue, both flux, 
and whatever they use in Solderwick, which I believe, is also some 
form of flux. Yeah, a cleanup would have been nice.



Even though, I've held a soldering iron, almost daily since, I was 
~12-ish, and I'm 55 now, my rework leaves its mark. My mother worked 
as an assembler for some 30 years. And a rework assembler most of that 
time. If she had done the rework, you would never had known. Up until 
only a few months before her passing, she would still critique my 
soldering work.



I don't know why the FET was replaced. Either it was bad "out-of-box", 
or the assembler put it in backwards initially. Getting a bad part, 
use to be rare, but now there's a whole controversy on questionable 
parts sources, out of China. As I get older, I notice myself making 
mistakes, that I wouldn't had made in my 20s or 30s. Those 4-pin DIP 
FETs can easily be mounted incorrectly. Especially if your eyesight 
has deteriorated.


On Saturday, October 11, 2014 9:06:19 AM UTC-7, Dman777 wrote:

    What do you mean by resolder the bad ones? If there were bad ones,
    wouldn't the clock not work? Also, how can you tell that the
    MOSFET has been replaced?

    Thanks,
    -Darin

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