Comments on: Electronics Repair Questions/Answers and Testimonials-Part 36 https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Mon, 10 Dec 2018 03:44:04 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Jestine Yong https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-348011 Mon, 10 Dec 2018 03:44:04 +0000 https://www.jestineyong.com/?p=4463#comment-348011 In reply to rex algon.

Hi Rex,

It can be the IC itself is shorted or a too high incoming DC supply voltage.

Jestine

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]]> By: rex algon https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-347934 Sat, 08 Dec 2018 04:13:30 +0000 https://www.jestineyong.com/?p=4463#comment-347934 dear sir jestine,

i have a little question to you ...why ic-LA76931k gets hot in a 1minute to up...what's the cause?kindly give me some tips ...that's in advance...

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]]> By: Jestine Yong https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-134073 Tue, 16 Oct 2012 21:26:08 +0000 https://www.jestineyong.com/?p=4463#comment-134073 In reply to Engineer Aqdus.

HI Engineer,

It could be bad filter caps.

Jestine

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]]> By: Engineer Aqdus https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-133734 Mon, 15 Oct 2012 21:10:31 +0000 https://www.jestineyong.com/?p=4463#comment-133734 dear Jestine yong,
                i would like to ask question about smps ,my laptop charger is based on smps design and it has low output power problem ,model of charger is Dell PA-1131-02 plz let me know about the suspected portion of supply which is need to be troubleshoot
thx

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]]> By: Jestine Yong https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-133409 Sun, 14 Oct 2012 17:40:57 +0000 https://www.jestineyong.com/?p=4463#comment-133409 In reply to dicksy.

Hi Dicksky,

You are welcome.

Jestine

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]]> By: dicksy https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-133250 Sun, 14 Oct 2012 03:00:24 +0000 https://www.jestineyong.com/?p=4463#comment-133250 hi jestin
i enjoy ur monthly newsletters and find them interesting and full of practical solutions.thank you verymuch.
have a good day
dicksy

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]]> By: Jestine Yong https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-132721 Fri, 12 Oct 2012 13:13:00 +0000 https://www.jestineyong.com/?p=4463#comment-132721 In reply to Hem.

Hi Hem,

Sorry I do not have info on such equipment. The only way is to find the schematic to get the exact part number.

Jestine

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]]> By: Jestine Yong https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-132713 Fri, 12 Oct 2012 13:01:26 +0000 https://www.jestineyong.com/?p=4463#comment-132713 In reply to Hem.

Hi Hem,

Have you check if there is any supply voltage to the LED driver iC? Or when you say go black in few seconds, is the power LED also off?

Jestine

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]]> By: Hem https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-132241 Thu, 11 Oct 2012 03:58:35 +0000 https://www.jestineyong.com/?p=4463#comment-132241 Sir, I have a LED monitor Viewsonic when i switch ON ok and it go black after a few second .What the cause ????

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]]> By: Hem https://jestineyong.com/electronics-repair-questionsanswers-and-testimonials-part-36/comment-page-1/#comment-132240 Thu, 11 Oct 2012 03:53:18 +0000 https://www.jestineyong.com/?p=4463#comment-132240 Sir, can i get IC 8 pins number in an electric Grass Trimmer Model :Flymo Samurai TMET 1000XT  variable speed module with one Triac. IC number was clean by supplier  .Thanks...

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