Use of Hot air gun: Difference between revisions

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<h1> Background information </h1>
<h1> Background information </h1>
<p> Using a heat gun is a key skill for data recovery as it allows for items to be solder/reballed/desoldered with realtive easy compared to using a traditional soldering iron for the same task </p>
<p> Using a heat gun is a key skill for data recovery as it allows for items to be solder/reballed/desoldered with relative easy compared to using a traditional soldering iron for the same task </p>
<h1 id="section0">What tools you will need</h1>
<h1 id="section0">What tools you will need</h1>
<i> Items are not listed in any particular order </i>
<i> Items are not listed in any particular order </i>
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<li>2. Chip desoldering</li>
<li>2. Chip desoldering</li>
<li>3.resoldering of BGA chips</li>
<li>3.resoldering of BGA chips</li>
<h1 id="section2">Step-by-step guide with images</h1>
<h1 id="section2">Step-by-step guide with images</h1>
<p>Insert step-by-step walkthrough with images and summary text here</p>
 
<p> <B>Step one</B>, enabling the fume extractor to ensure any hazardous fumes are removed (if you are able to smell the fumes, then your extractor is not working correctly).</p>
<img src="/images/VSCAM/VSCAM/Soldering/IMG_20250210_220731_HDR.jpg"style="width auto:50px;height;50px">
 
<p> <B> Step two</B>, Set the temperature of your hot air gun to 250C/482F for lead-free 200C/352F for leaded solder and around 40 litres per minute 4 on a dial (these are not exact numbers you may have to adjust according to your needs and tools).</p>
<img src="/images/VSCAM/VSCAM/Hot air gun/IMG_20250210_222759_HDR.jpg"style="width auto:auto;height;auto">
 
<p> <B>Step three</B>, place the item you're de/soldering in the position you want so that you can de/solder it. </p>
<img src="/images/VSCAM/VSCAM/Hot air gun/000025.jpg"style="width auto:auto;height;auto">
 
<p> <B>Step four</B>, Clean up the area with desoldering wick or lint free cotton buds and 99% isopropyl alcohol.(this just ensures the area is clean and less chance of issues) </P>
<img src="/images/VSCAM/VSCAM/Desoldering/000024.jpg"style="width auto:auto;height;auto">
 


<h1 id="section3">Flow chart of order of operations</h1>
<h1 id="section3">Flow chart of order of operations</h1>
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<h1 id="section4">Troubleshooting/tips and tricks</h1>
<h1 id="section4">Troubleshooting/tips and tricks</h1>
<p>Fixes to any common issues that were encountered or could be easily encountered</p>
<p>Fixes to any common issues that were encountered or could be easily encountered</p>
<p> Q: It keeps blowing away or moving when I bring up the hot air gun! </p>
</br>
<p> A: lower your air flow to around 30 litres a minute(3 on a dial) this will stop the component "blowing away".
The trick is to "sneak up" on the component by bring the gun in from the side at a 45-degree angle instead of directly on top of the component.
<p> Q: The solder surrounding the thing I want to desolder takes forever to melt</p>
<p> A: The board is likely absorbing the heat from the soldering iron, heating up the board as a whole is recommended to overcome the board's heat dissipation capacity.</br> Heat board to around 100 degrees/37.77c - 150 degrees/65.55c through the use of a board preheater.</br>(Not exact numbers just personal preference, experience as it heats the board enough without causing heat damage to other areas or melting other solder.) </p>


<h1 id="section5">Related Topics</h1>
<h1 id="section5">Related Topics</h1>
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<div class="reference-list">
<div class="reference-list">
     <ol>
     <ol>
         <li>Reference 1: <a href="#">Source details</a></li>
         <li>Reference 1: <a href="https://youtu.be/gl9NuCiDR7s?si=oB8zlcl0orGuSohD">YouTube video about techniques</a></li>
         <li>Reference 2: <a href="#">Source details</a></li>
         <li>Reference 2: <a href="https://www.eevblog.com/forum/repair/basics-of-hot-air-rework-repairs/">forum post regarding temperatures</a></li>
     </ol>
     </ol>
</div>
</div>

Latest revision as of 20:30, 9 March 2025

Data Recovery Resources

Background information

Using a heat gun is a key skill for data recovery as it allows for items to be solder/reballed/desoldered with relative easy compared to using a traditional soldering iron for the same task

What tools you will need

Items are not listed in any particular order

Required

  • Hot air gun
  • Heat resistance mat
  • set of tweezers

Optional but useful

  • Digital microscope

Uses of this skill

  • 1.BGA reballing
  • 2. Chip desoldering
  • 3.resoldering of BGA chips

    • Step-by-step guide with images

    Step one, enabling the fume extractor to ensure any hazardous fumes are removed (if you are able to smell the fumes, then your extractor is not working correctly).

    Step two, Set the temperature of your hot air gun to 250C/482F for lead-free 200C/352F for leaded solder and around 40 litres per minute 4 on a dial (these are not exact numbers you may have to adjust according to your needs and tools).

    Step three, place the item you're de/soldering in the position you want so that you can de/solder it.

    Step four, Clean up the area with desoldering wick or lint free cotton buds and 99% isopropyl alcohol.(this just ensures the area is clean and less chance of issues)

    Flow chart of order of operations

    Insert a flow chart of steps and actions for each task (create using diagram)

    Troubleshooting/tips and tricks

    Fixes to any common issues that were encountered or could be easily encountered

    Q: It keeps blowing away or moving when I bring up the hot air gun!


    A: lower your air flow to around 30 litres a minute(3 on a dial) this will stop the component "blowing away". The trick is to "sneak up" on the component by bring the gun in from the side at a 45-degree angle instead of directly on top of the component.

    Q: The solder surrounding the thing I want to desolder takes forever to melt

    A: The board is likely absorbing the heat from the soldering iron, heating up the board as a whole is recommended to overcome the board's heat dissipation capacity.
    Heat board to around 100 degrees/37.77c - 150 degrees/65.55c through the use of a board preheater.
    (Not exact numbers just personal preference, experience as it heats the board enough without causing heat damage to other areas or melting other solder.)

    Related Topics

    Topics such as desoldering to chip off or firmware dumping for disk PCB repairs

    Further reading

    External references in wiki references can just be cited through the keyword link

    1. Reference 1: YouTube video about techniques
    2. Reference 2: forum post regarding temperatures

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