Greetings,
?
I bought a Madell 850B SMD Rework Station last year. I do not use it as much as I thought I would but it is great to have around. I use it to preheat ground planes that my small irons cannot handle.
?
jerry
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--- On Mon, 9/22/08, d.seiter@... <d.seiter@...> wrote:
From: d.seiter@... <d.seiter@...>
Subject: Re: [TekScopes] Re: [TekScopes2] Re:Replacing caps
To: TekScopes@...
Date: Monday, September 22, 2008, 12:58 AM
So I'm not the only one makes weird soldering tips. I had to make a .5" wide one a while back that worked great. I also made one with a 2.5" wide blade for a DC/DC converter that was really stubborn- it worked, but not very well.
-Dave
------------ -- Original message ------------ --------- -
From: "Jonathan Thornton" <Jonathanthornton@ bulldoghome. com>
Hi everybody
Hurrah, I just got my TDS 544A working, usual acq fault, replaced all the
electrolytics on the acquisition PCB - still same fault, so I replaced all the
double and quad SOIC op.amps (TL 02/04 )--fault finding by attrition
I removed the caps by making a 2 pronged fork out of wire for the tip of the
soldering iron, to unsolder both sides of the cap simultaneously.
You can alternate the iron from one side of the cap to the other whilst lifting
the cap, but there a serious risk of pulling a pad off.
For the ICs I made a U shaped tip for the end of the iron out of brass sheet,
which with a bit of adjustment gripped the IC and unsoldered both sides at the
same time, very quick.
I then cleaned up all the pads with desoldering (the spellcheck tried to
change this to 'disordering' braid) and cleaned the board with isopropyl
alchohol.
For replacement i used solder paste and a very fine iron tip, all helped
enormously by a great purchase on XXXX,
a nearly new Leica StereoZoom 4 binocular microscope for under $180, it's one
of those things you don't know how you managed without
Finally a wash in the dishwasher.
Jonathan
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