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当前版本: Andre ,

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Hi, have the same problem (maybe) here. It looks like even using a plastic spudger is enough to do this if you are really unlucky. Incidentally some ideas I had: use “laser soldering” to heat just the prepared solder microcolloid consisting of screened soot/PG dust and solder paste on each end rather than using conventional reflow because this may be far superior. I am looking into writing some papers on this :-)
 
Minimum power may be less than 150mW so a modified BR writer diode could be fine if the board is preheated to 75 Celsius first (still within tolerance) also have some old dead boards with various problems to practise on.
 
Also possible: use IR 250mW diode with coaxial blue beam from weaker laser eg an Osram PL450 as this may be somewhat safer: use indirect viewing via a safe box and other measures to prevent eye exposure to reflected beam(s).
 
Ideally I want to fix the one with long screw damage (found this one in a bin!)
 
Incidentally dried up solder paste is still somewhat useful if chemically separated: need to put it back into solution and modified so that the particles are once again separate. I think this could work but need to do some more research.

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编辑: Andre ,

文本:

Hi, have the same problem (maybe) here. It looks like even using a plastic spudger is enough to do this if you are really unlucky. Incidentally some ideas I had: use “laser soldering” to heat just the prepared solder microcolloid consisting of screened soot/PG dust and solder paste on each end rather than using conventional reflow because this may be far superior. I am looking into writing some papers on this :-)
Hi, have the same problem (maybe) here. It looks like even using a plastic spudger is enough to do this if you are really unlucky. Incidentally some ideas I had: use “laser soldering” to heat just the prepared solder microcolloid consisting of screened soot/PG dust and solder paste on each end rather than using conventional reflow because this may be far superior. I am looking into writing some papers on this :-)
 
Minimum power may be less than 150mW so a modified BR writer diode could be fine if the board is preheated to 75 Celsius first (still within tolerance) also have some old dead boards with various problems to practise on.
 
Also possible: use IR 250mW diode with coaxial blue beam from weaker laser eg an Osram PL450 as this may be somewhat safer: use indirect viewing via a safe box and other measures to prevent eye exposure to reflected beam(s).
 
Ideally I want to fix the one with long screw damage (found this one in a bin!)

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原帖由: Andre ,

文本:

Hi, have the same problem (maybe) here. It looks like even using a plastic spudger is enough to do this if you are really unlucky.  Incidentally some ideas I had: use “laser soldering” to heat just the prepared microcolloid on each end rather than using conventional reflow because this may be far superior.

Minimum power may be less than 150mW so a modified BR writer diode could be fine if the board is preheated to 75 Celsius first (still within tolerance) also have some old dead boards with various problems to practise on.

Ideally I want to fix the one with long screw damage (found this one in a bin!)

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