Comments on: Electronic Repair Questions/Answers And Testimonials- Part 52 https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-part-52/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Fri, 29 Jan 2016 02:59:32 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Jestine Yong https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-part-52/comment-page-1/#comment-275662 Fri, 29 Jan 2016 02:59:32 +0000 https://www.jestineyong.com/?p=2728#comment-275662 In reply to Jason Bowen.

Hi Jsaon,

If the output voltages from the power supply are good then suspect one of the backlights have problem. Make sure all the cables are properly seated. If the power LED light is green/white the mmainboard is probably good but if the color is Red then the mainboard can be the problem.

Jestine

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]]> By: Jason Bowen https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-part-52/comment-page-1/#comment-275637 Thu, 28 Jan 2016 18:38:20 +0000 https://www.jestineyong.com/?p=2728#comment-275637 Hello Mr. Justine! I have a Westinghouse LCM 19w4 monitor that flashes white then the backlight goes back off when I try to turn it on. The power light remains on so I'm pretty sure the main board is OK, but I'm not sure whether my power supply or the backlights are bad. I think the display board may have an issue too for it to blink white instead of displaying something. How do I go about solving this?

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]]> By: Robert Calk https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-part-52/comment-page-1/#comment-235274 Fri, 27 Feb 2015 12:49:22 +0000 https://www.jestineyong.com/?p=2728#comment-235274 In reply to Charles Burnette.

Hi Charles,

I am wondering if the on/off switch is bad. Did you check it?

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]]> By: Jestine Yong https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-part-52/comment-page-1/#comment-235241 Thu, 26 Feb 2015 14:14:29 +0000 https://www.jestineyong.com/?p=2728#comment-235241 In reply to Charles Burnette.

HI Charles,

It can be due to the power supply board itself or the mainboard. This means if the mainboard MCU IC sending a on/off signal to the power supply then the power supply will be turning off and on. I suggest that you check if the MCU ic is getting the right dc supply or not. If it is good and stable then you may need to check if the On signal to the Optoisolator ic is stable and not turning On and off.

Jestine

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]]> By: Charles Burnette https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-part-52/comment-page-1/#comment-235165 Mon, 23 Feb 2015 22:58:55 +0000 https://www.jestineyong.com/?p=2728#comment-235165 I am having a problem with a Dynex DX LCD32 tv model no. E327AZNK2WBYNN.
The tv has been turning on and off on it's own. Have done the hard reset by unplugging the cord overnight and plugging it back in with no results.
I took the back cover off to inspect the boards and didn't see anything out of the ordinary such as bulging and leaky capacitors. I am stumped.
The main board is a 715t2300-3 and the power supply board is a 715t2463-3. My first assumption was the power supply board but it comes on fine but then it turns off and starts cycling on and off on it's own. If I leave it plugged into the wall receptacle it will turn on and off on it's own until I remove it from the power source.
Any help will be appreciated.

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]]> By: admin https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-part-52/comment-page-1/#comment-5226 Fri, 23 Apr 2010 00:31:37 +0000 https://www.jestineyong.com/?p=2728#comment-5226 Hi Arnold,

You are welcome!

Jestine

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]]> By: Arnold Codilla https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-part-52/comment-page-1/#comment-5224 Thu, 22 Apr 2010 14:20:47 +0000 https://www.jestineyong.com/?p=2728#comment-5224 Hi Sir Jestine:
how are you? hope your ok by the way sir thanks for the news later about in electronics idea. good luck thanks and more power your GOD BLESS.

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