[time-nuts] I love the smell of tantalum in the morning

[Adrian Godwin]

Metcal /OKI might be that other brand. I'd certainly recommend them, but
the tweezers are not as fast to heat as the single tip devices.

I've had little success personally with the hot air devices. I seem to
toast the board before I melt the solder, and when it does melt it's not
limited to one component. Doubtless it's my technique at fault, but I
prefer the tweezers.






On Sat, Nov 5, 2016 at 7:20 PM, jimlux <jimlux at earthlink.net> wrote:

> On 11/5/16 12:12 PM, Tom Van Baak wrote:
>
>> See C13 in the attached photo. I need to replace some blown caps on a few
>> boards [1]. In one instance the cap got so hot it melted itself off the
>> board. Quiet convenient, actually -- it acts like its own fuse -- but I
>> don't think the 5071 designers had that clever feature in mind.
>>
>> Having not done SMT before, how should I do it with minimal risk to the
>> very precious PCB. Or, what equipment should I use this as a good excuse to
>> buy?
>>
>>
> Suitable hot tweezers would do this just fine, for both the removal and
> the replacement.
>
> this kind of thing
> http://www.weller-toolsus.com/weller-t0051317199-wta-50-twee
> zers-smd-desoldering.html
> https://www.amazon.com/WMRT-Desoldering-Tweezers-Soldering-
> Stations/dp/B000UMMUII
>
> It's what I've used at work, with a wx2021
> Here's the complete set:
> http://www.weller-toolsus.com/soldering/systems/weller-wx202
> 1-solder-stat-wxmpms-wxmtms-wdh51-wdh60-120v.html
>
> The tips heat basically instantly. It makes it easy to remove/replace even
> tiny stuff, although 0402 is just too small for me.
>
> You need a good magnifier or stereo microscope, and some orange sticks to
> hold things in place while you solder, etc.
>
>
> However, I've been given to understand that there is another superior
> brand (on this list.. )
>
>
>
> Thanks,
>> /tvb
>>
>> [0] http://www.imdb.com/title/tt0078788/quotes
>> [1] http://leapsecond.com/museum/hp5071a/A1-mother.htm
>>
>>
>>
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