Comments on: About Optoisolator IC In Power Section https://jestineyong.com/about-optoisolator-ic-in-power-section/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Mon, 08 Jun 2015 12:58:53 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Jestine Yong https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-237924 Mon, 08 Jun 2015 12:58:53 +0000 https://www.jestineyong.com/?p=2177#comment-237924 In reply to alberto catindig.

HI Alberto,

Try trace the +v line and see if there is any bad component. It can be bad filter cap, bad diode and etc.

Jestine

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]]> By: alberto catindig https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-237852 Fri, 05 Jun 2015 10:11:26 +0000 https://www.jestineyong.com/?p=2177#comment-237852 Hi sir, i have a sony audio component, have -v but no +v secondary output . The display also tells protect e03. I need your advice and idea. Thanks

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]]> By: Jestine Yong https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-123429 Sat, 22 Sep 2012 12:45:48 +0000 https://www.jestineyong.com/?p=2177#comment-123429 In reply to victor.

Hi Victor,
You are welcome!

Jestine

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]]> By: victor https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-123348 Sat, 22 Sep 2012 06:49:30 +0000 https://www.jestineyong.com/?p=2177#comment-123348 Thanks 2 u jestine for all ur effort  2 practice & compiled all dis 4 us & thanks 2 that kenya man 4 his breakthrough on opening of  adapter enclosures ; it works like magic

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]]> By: Jestine Yong https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-115262 Mon, 27 Aug 2012 15:03:09 +0000 https://www.jestineyong.com/?p=2177#comment-115262 In reply to Elaine.

Hi Elaine,

It could be the power supply have problem. You may need to check the internal fuse and start troubleshooting the primary side components. If you do not have experience on electronics repair I suggest that you send to your local electronics repair shop.

Jestine

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]]> By: Elaine https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-115041 Sun, 26 Aug 2012 09:19:09 +0000 https://www.jestineyong.com/?p=2177#comment-115041 My coby LCD tv get power through the power cord but not coming on. What is the problem

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]]> By: Jestine Yong https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-112253 Thu, 16 Aug 2012 14:50:19 +0000 https://www.jestineyong.com/?p=2177#comment-112253 In reply to TANA.

Hi Tana,

YOU are welcome!

Jestine

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]]> By: TANA https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-111984 Thu, 16 Aug 2012 00:13:43 +0000 https://www.jestineyong.com/?p=2177#comment-111984 Dear Jestine,
You are surounded by a whole world of electronic.. And your notes and tips will have helped many readers. You are not only gifted but also very heplful and genrous.

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]]> By: Jestine Yong https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-111193 Mon, 13 Aug 2012 18:57:36 +0000 https://www.jestineyong.com/?p=2177#comment-111193 In reply to victor.

Hi Victor,

Try this link:

https://www.jestineyong.com/testing-optoisolator-pc123/

Jestine

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]]> By: victor https://jestineyong.com/about-optoisolator-ic-in-power-section/comment-page-1/#comment-110814 Sun, 12 Aug 2012 17:15:18 +0000 https://www.jestineyong.com/?p=2177#comment-110814 Hi Jestine,
I can't thank u enough for the hints I get from ur site. u've really transformed my repair skills. Really bad that i've not bought ur books. I do repairs for fun. Could pls tell me how to test the optoisolator in a SMPS(s). Thanks in advance.
Victor, Lagos Nigeria

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