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Removing SMD components; masking
Removing SMD components; masking
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Old 17th April 2018, 11:56 AM   #11
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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Join Date: Dec 2012
Location: The Jurassic Coast, England. GB
In the early days of SMD, circa 1983, for SMD replacement in Sony camcorders, I used to photograph the board before hand, ensuring if the heat got too much and components blew away, I stood a good chance of replacing them. Luckily I never needed to replace any.
I use Infra Red and a board base heater, temperature controlled and programmed to avoid stress to the board and losing surrounding components.
It was quite expensive but as it is my profession, it paid for itself over a six month period.
As I say, flux is the key.
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Old 17th April 2018, 09:35 PM   #12
phase is offline phase  United States
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Thanks, those tweezers are pretty slick, might have to see if they make any like that for my new soldering station.
The practicing went well just flooding the 5x7mm oscillator with some garbage radio shack solder that I wouldn’t use to connect anything with, has lots of flux inside. The mask that was made from some adhesive backed foil tape worked very well to keep the flood of solder off of any nearby components.

The removal portion of this job will likely go smoothly, but the adaptation of a 2 x 2.5mm clock to the board is requiring me to make an adapter board. So far it looks good having drilled some holes for tiny wire to go through and then bend in a way that it will stay put. Then the wire can be lightly tinned, and the tiny clock added before mounting the assembly onto my main board.

The 5 x 7mm breakout board was basically done when I decided to snip it away from the larger portion of board from which it was made, flying somewhere into a dark corner...

Maybe tomorrow.
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