[Coco] Desoldering tools

[didier derny]

Interesting....

looks like the tp-100 but far less expensive...


On 19/10/2017 21:20, Grumpyx wrote:
> I use an older Hakko de-soldering gun looks like the generic version I've
> linked below. It appears Hakko has a newer version now. Be sure to order
> extra filters as they are key to them continuing to work well. I also like
> that's it portable.
>
> https://www.ebay.com/itm/S-993A-110V-90W-Electric-Vacuum-
> Desoldering-Pump-Solder-Sucker-Gun-In-US-/251876278039?epid=504338133&
> hash=item3aa4feff17:g:i9MAAOSwdGFY2fNZ
>
> I have seen mentioned before with older solder joints sometimes it's better
> if you re-solder them with fresh solder before using the de-solder pump. I
> have used this tip many times and it has helped save parts and pads.
>
> Malcom
>
>
>
>
>
> On Thu, Oct 19, 2017 at 2:20 PM, Salvador Garcia via Coco <
> coco at maltedmedia.com> wrote:
>
>> Since desoldering was mentioned in the thread titled "I've killed my
>> CoCo", I thought I'd ask about what tools are used to desolder chips.
>>
>> Ed mentioned that different techniques work for different people, so I am
>> interested in hearing what others have to say.
>>
>> Lately, I had to desolder a bunch of electrolytic caps (not CoCo related)
>> and I found that it took a while for the solder to melt and release the
>> cap's lead.
>>
>> In the past, I've used a desoldering pump like this one:
>>
>> https://www.digikey.com/product-detail/en/17537/243-1184-ND/1992578
>>
>> While effective, I found that I needed to press it against the PCB because
>> if I didn't, the "kickback" from the pump action would move the pump away
>> from the PCB, not effectively sucking the solder. Also, I found that for
>> me, this device worked best when I applied the heat on one side of the PCB
>> while pressing the pump's tip to the other side and releasing it when the
>> solder melted. However, this was not always possible and sometimes I found
>> myself having to melt the solder (on the PCB''s solder side) then quickly
>> pressing the pump's tip against the PCB and releasing it. This worked, but
>> rather clumsily. Currently, the pump has seen better days because it no
>> longer locks in position reliably.
>>
>> When I had to remove the 6809 from my non-functional CoCo 3 I used solder
>> wick. This worked, as evidenced by the silvery finish on the wick, but I
>> have taken too long to remove all the solder and I still have not been able
>> to free all the pins.
>>
>> I saw a desoldering gun in action at a recent Maker event and was
>> impressed.
>>
>> I don't desolder often, but when I do, I really need an effective way of
>> doing this. I was looking into buying a desoldering gun, but the prices
>> hover around $150 USD and this is too expensive for me for just occasional
>> use.
>>
>> I hope other share their experiences and the tools that they use, perhaps
>> recommending specific products.I certainly am interested in learning from
>> others' expriences :-).
>>
>> Thanks, best wishes, Salvador
>>
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> https://pairlist5.pair.net/mailman/listinfo/coco
>>