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	<title>Comments on: Electrolytic capacitor failures</title>
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	<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/</link>
	<description>All about electronics and circuit design</description>
	<lastBuildDate>Thu, 16 Apr 2026 16:37:06 +0000</lastBuildDate>
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	<item>
		<title>By: Tomi Engdahl</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-2/#comment-1818427</link>
		<dc:creator><![CDATA[Tomi Engdahl]]></dc:creator>
		<pubDate>Sat, 25 Nov 2023 13:00:21 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1818427</guid>
		<description><![CDATA[I Built An Electric Capacitor Revolver!
https://www.youtube.com/watch?v=4Fy9bZEufx0]]></description>
		<content:encoded><![CDATA[<p>I Built An Electric Capacitor Revolver!<br />
<a href="https://www.youtube.com/watch?v=4Fy9bZEufx0" rel="nofollow">https://www.youtube.com/watch?v=4Fy9bZEufx0</a></p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Tomi Engdahl</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-2/#comment-1810954</link>
		<dc:creator><![CDATA[Tomi Engdahl]]></dc:creator>
		<pubDate>Thu, 17 Aug 2023 14:55:29 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1810954</guid>
		<description><![CDATA[Electrolytic Capacitors: Comprehensive Overview, Teardown, and Experiments
https://www.youtube.com/watch?v=MAP-VA1m-A4

Through experiments, I compared different types of electrolytic capacitors such as solid and hybrid.

0:00 Brand Name Changes to Chemi-Con!
0:33 Which Products Use Eleltrolytic Capacitors?
2:26Difference Between 3 Types of Aluminum Electrolytic Capacitors
3:04Type 1: &quot;Commonly Used&quot; Aluminum Electrolytic Capacitor
4:34 Structure and Equivalent Circuit of an Aluminum Electrolytic Capacitor
5:40Type 2: &quot;Low ESR&quot; Conductive Polymer Aluminum Solid Electrolytic Capacitor
6:45 Type 3: &quot;Get the Best of Both Worlds&quot; Conductive Polymer Hybrid Aluminum Electrolytic Capacitor
7:16 ESR (Equivalent Series Resistance) of Electrolytic Capacitors
8:49 Lifetime of Electrolytic Capacitors
10:09 Same Capacitance, Different Ripple Voltages
12:19 Reverse Polarity (*Do Not Try This Yourself*)
13:26 Operating Temperatures of Electrolytic Capacitors]]></description>
		<content:encoded><![CDATA[<p>Electrolytic Capacitors: Comprehensive Overview, Teardown, and Experiments<br />
<a href="https://www.youtube.com/watch?v=MAP-VA1m-A4" rel="nofollow">https://www.youtube.com/watch?v=MAP-VA1m-A4</a></p>
<p>Through experiments, I compared different types of electrolytic capacitors such as solid and hybrid.</p>
<p>0:00 Brand Name Changes to Chemi-Con!<br />
0:33 Which Products Use Eleltrolytic Capacitors?<br />
2:26Difference Between 3 Types of Aluminum Electrolytic Capacitors<br />
3:04Type 1: &#8220;Commonly Used&#8221; Aluminum Electrolytic Capacitor<br />
4:34 Structure and Equivalent Circuit of an Aluminum Electrolytic Capacitor<br />
5:40Type 2: &#8220;Low ESR&#8221; Conductive Polymer Aluminum Solid Electrolytic Capacitor<br />
6:45 Type 3: &#8220;Get the Best of Both Worlds&#8221; Conductive Polymer Hybrid Aluminum Electrolytic Capacitor<br />
7:16 ESR (Equivalent Series Resistance) of Electrolytic Capacitors<br />
8:49 Lifetime of Electrolytic Capacitors<br />
10:09 Same Capacitance, Different Ripple Voltages<br />
12:19 Reverse Polarity (*Do Not Try This Yourself*)<br />
13:26 Operating Temperatures of Electrolytic Capacitors</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Tomi Engdahl</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-2/#comment-1709753</link>
		<dc:creator><![CDATA[Tomi Engdahl]]></dc:creator>
		<pubDate>Wed, 05 May 2021 12:43:17 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1709753</guid>
		<description><![CDATA[SMPS repair:

First – cleaning.
Second – recap.
Third – diodes.
Fourth – the output transformer.
And then … imagine.]]></description>
		<content:encoded><![CDATA[<p>SMPS repair:</p>
<p>First – cleaning.<br />
Second – recap.<br />
Third – diodes.<br />
Fourth – the output transformer.<br />
And then … imagine.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Tomi Engdahl</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-2/#comment-1702842</link>
		<dc:creator><![CDATA[Tomi Engdahl]]></dc:creator>
		<pubDate>Wed, 03 Feb 2021 12:25:00 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1702842</guid>
		<description><![CDATA[Six Common Mistakes Made When Recapping Vintage Electronics
https://www.youtube.com/watch?v=BeDKwi-GJRI

Short little video on common mistakes seen when recapping (replacing capacitors) vintage electronics.  This would include vintage stereos, radios, equipment, CBs, ham radio receivers &amp; transmitters, calculators, computers, you name it.
Hopefully this will provide you some tips and hints to use when you go to recap your piece of vintage gear.
Topics include:
- Mistaking Factory Glue for Leaking Capacitors
- Factory Boards and Manuals Marked Wrong
- Capacitors Installed Incorrectly
- Using Larger Capacitors Than Specified
- Buying Electrolytic Capacitors off Ebay
- Replacing Everything at Once]]></description>
		<content:encoded><![CDATA[<p>Six Common Mistakes Made When Recapping Vintage Electronics<br />
<a href="https://www.youtube.com/watch?v=BeDKwi-GJRI" rel="nofollow">https://www.youtube.com/watch?v=BeDKwi-GJRI</a></p>
<p>Short little video on common mistakes seen when recapping (replacing capacitors) vintage electronics.  This would include vintage stereos, radios, equipment, CBs, ham radio receivers &amp; transmitters, calculators, computers, you name it.<br />
Hopefully this will provide you some tips and hints to use when you go to recap your piece of vintage gear.<br />
Topics include:<br />
- Mistaking Factory Glue for Leaking Capacitors<br />
- Factory Boards and Manuals Marked Wrong<br />
- Capacitors Installed Incorrectly<br />
- Using Larger Capacitors Than Specified<br />
- Buying Electrolytic Capacitors off Ebay<br />
- Replacing Everything at Once</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Tomi Engdahl</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-2/#comment-1679677</link>
		<dc:creator><![CDATA[Tomi Engdahl]]></dc:creator>
		<pubDate>Thu, 21 May 2020 12:40:51 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1679677</guid>
		<description><![CDATA[https://www.epanorama.net/blog/2018/12/04/behringer-b208d-active-pa-speaker-repair/]]></description>
		<content:encoded><![CDATA[<p><a href="https://www.epanorama.net/blog/2018/12/04/behringer-b208d-active-pa-speaker-repair/" rel="nofollow">https://www.epanorama.net/blog/2018/12/04/behringer-b208d-active-pa-speaker-repair/</a></p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Tomi Engdahl</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-1/#comment-1679327</link>
		<dc:creator><![CDATA[Tomi Engdahl]]></dc:creator>
		<pubDate>Mon, 18 May 2020 06:25:29 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1679327</guid>
		<description><![CDATA[https://www.facebook.com/groups/electronichobycircuits/permalink/3203407366350617/ asks
&quot;Can I use 4.7uf 50 volt to replace 4.7 uf 400 volt
Same capistor not available&quot; ?


Generally the answer is no. You need a capacitor that can handle the needed voltage. So right choice is to use capacitor with the same voltage rating or next higher voltage rating available. 
If you put lower voltage rating component, it will fail catastrophically most propably immediately oe very quicly - unless the manufacturer for some reason originally installed a higher voltage rated component than was needed (rare case, you need to have schematic or original component list to know what was originally specified to be needed)]]></description>
		<content:encoded><![CDATA[<p><a href="https://www.facebook.com/groups/electronichobycircuits/permalink/3203407366350617/" rel="nofollow">https://www.facebook.com/groups/electronichobycircuits/permalink/3203407366350617/</a> asks<br />
&#8220;Can I use 4.7uf 50 volt to replace 4.7 uf 400 volt<br />
Same capistor not available&#8221; ?</p>
<p>Generally the answer is no. You need a capacitor that can handle the needed voltage. So right choice is to use capacitor with the same voltage rating or next higher voltage rating available.<br />
If you put lower voltage rating component, it will fail catastrophically most propably immediately oe very quicly &#8211; unless the manufacturer for some reason originally installed a higher voltage rated component than was needed (rare case, you need to have schematic or original component list to know what was originally specified to be needed)</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Tomi Engdahl</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-1/#comment-1647414</link>
		<dc:creator><![CDATA[Tomi Engdahl]]></dc:creator>
		<pubDate>Wed, 07 Aug 2019 16:14:47 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1647414</guid>
		<description><![CDATA[If the design is a proven and worked well earlier, I would check the potential issues:
- capacitors are installed to circuit board on right way (not + and - wring way on assembly)
- right components (meet specified specifications of not exact same type as originally used)
- capacitors have not been damaged during manufacture or rework
- capacitor quality problems (bad quality to begin with, potentially counterfeit parts, etc..)

I would not suspect the second rinse.]]></description>
		<content:encoded><![CDATA[<p>If the design is a proven and worked well earlier, I would check the potential issues:<br />
- capacitors are installed to circuit board on right way (not + and &#8211; wring way on assembly)<br />
- right components (meet specified specifications of not exact same type as originally used)<br />
- capacitors have not been damaged during manufacture or rework<br />
- capacitor quality problems (bad quality to begin with, potentially counterfeit parts, etc..)</p>
<p>I would not suspect the second rinse.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: kevin williams</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-1/#comment-1647399</link>
		<dc:creator><![CDATA[kevin williams]]></dc:creator>
		<pubDate>Wed, 07 Aug 2019 10:34:48 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1647399</guid>
		<description><![CDATA[we reworked a bunch of PCBs. now we have electrolytic caps fail in other parts of the pcbs with a proven design. it seems the failure is bulging caps and eventually electrolyte seeping from just the bottom of the caps. 
could this be from the rework and second rinse of the pcbs?]]></description>
		<content:encoded><![CDATA[<p>we reworked a bunch of PCBs. now we have electrolytic caps fail in other parts of the pcbs with a proven design. it seems the failure is bulging caps and eventually electrolyte seeping from just the bottom of the caps.<br />
could this be from the rework and second rinse of the pcbs?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: kevin williams</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-1/#comment-1647398</link>
		<dc:creator><![CDATA[kevin williams]]></dc:creator>
		<pubDate>Wed, 07 Aug 2019 10:34:42 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1647398</guid>
		<description><![CDATA[we reworked a bunch of PCBs. now we have electrolytic caps fail in other parts of the pcbs with a proven design. it seems the failure is bulging caps and eventually electrolyte seeping from just the bottom of the caps. 
could this be from the rework and second rinse of the pcbs?]]></description>
		<content:encoded><![CDATA[<p>we reworked a bunch of PCBs. now we have electrolytic caps fail in other parts of the pcbs with a proven design. it seems the failure is bulging caps and eventually electrolyte seeping from just the bottom of the caps.<br />
could this be from the rework and second rinse of the pcbs?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: tessacosplay.us</title>
		<link>https://www.epanorama.net/blog/2010/03/23/electrolytic-capacitor-failures/comment-page-1/#comment-1638993</link>
		<dc:creator><![CDATA[tessacosplay.us]]></dc:creator>
		<pubDate>Thu, 16 May 2019 06:29:29 +0000</pubDate>
		<guid isPermaLink="false">http://www.epanorama.net/blog/?p=1269#comment-1638993</guid>
		<description><![CDATA[You actually make it seem really easy with your presentation however I find this matter 
to be actually something that I believe I&#039;d by no means understand.
It seems too complicated and extremely broad for me. I&#039;m having a look ahead on your 
next post, I will try to get the grasp of it!]]></description>
		<content:encoded><![CDATA[<p>You actually make it seem really easy with your presentation however I find this matter<br />
to be actually something that I believe I&#8217;d by no means understand.<br />
It seems too complicated and extremely broad for me. I&#8217;m having a look ahead on your<br />
next post, I will try to get the grasp of it!</p>
]]></content:encoded>
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