NewtonTalk.net June 2009 archive: Re: [NTLK] eMate overclocked

From: Ed Kummel <tech_ed_at_yahoo.com>
Date: Fri Jun 12 2009 - 01:04:35 EDT

This may sound rather draconian, but I've done it for years...and I am also a certified Tempest Technology solder-er (well, I was about 20 years ago...)
I found all these solder sucker devices to be a pain! So, I use the the "solder-*BANG*" technique.
Observe the components on the board and orient the board with the minimal amount of potential damage.
Then heat the solder joint, and *SLAM* the board on the work bench so that the solder will fly out of the solder joint. Do this often enough, and the component will just fall off the board!
Works for almost anything!
Ed
web/gadget guru
------------------------------------------------------------------------

By Richard Feynman, Physicist, Nobel winner (1918-1988)

"There are 10^11 stars in the galaxy. That used to be a huge number. But it's only a hundred billion. It's less than the national deficit! We used to call them astronomical numbers. Now we should call them economical numbers."

--- On Thu, 6/11/09, Andrei Chichak <newton@chichak.ca> wrote:

From: Andrei Chichak <newton@chichak.ca>
Subject: Re: [NTLK] eMate overclocked
To: newtontalk@newtontalk.net
Date: Thursday, June 11, 2009, 10:15 PM

On 11-Jun-09, at 7:53 PM, Sonny Hung wrote:
>
> On Thu, Jun 11, 2009 at 9:03 PM, Matt Howe <matthowe@comcast.net>
> wrote:
>> Have you ever tried solder wicking?
>
>
> No, but I don't think it would be of a higher success rate or
> effectiveness
> to my unstrained experience.
>

Solder wick on a crystal wouldn't work awfully well since, as Sonny
said, it's a surface mount part and most of the contact is underneath
the part.

The PROPER way is to use hot tweezers or a hot air rework tip. You can
add more solder to get a good thermal flow going, then simultaneously
heat both sides and slide the crystal off of its pads. Use the solder
wick to clean up the pads. Don't use too much heat though, you would
probably only need about 420 degrees F (185C for modern folk). Any
more heat than that and you start lifting pads and roasting stuff.

I've seen a material that you can use that alloys with the solder and
lowers the melt temperature to 136F (58C). Solder it up and slide it
off.

Andrei

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