Comments on: Electronic Repair Questions/Answers And Testimonials Part 18 https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Mon, 27 Jul 2015 01:16:16 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Jaylan https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-40256 Thu, 01 Dec 2011 15:47:43 +0000 https://www.jestineyong.com/?p=1458#comment-40256 Thank you so much sir for immediate response..more power.

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]]> By: admin https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-40194 Thu, 01 Dec 2011 07:41:29 +0000 https://www.jestineyong.com/?p=1458#comment-40194 Hi Jaylan,

Try use the link below to isolate the problem:

http://www.scribd.com/doc/2957819/TT204-Identifying-television-SMPS-problems

Jestine

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]]> By: Jaylan https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-40103 Wed, 30 Nov 2011 17:58:36 +0000 https://www.jestineyong.com/?p=1458#comment-40103 Hi sir have a wonderful day,
can you help me pls?.. i have TCL-2009 tv crt. my problem is NO POWER BUT THE LED IS BLINKING, I replace already the control ic TDA16846 but still not working.
may i know sir if what is the common proplem regarding with this issue?.
thank you so much and more power.

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]]> By: admin https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-35049 Thu, 03 Nov 2011 23:55:32 +0000 https://www.jestineyong.com/?p=1458#comment-35049 HI Manju,

You need to check for shorted fet transistor and make sure no dry joints in thew high voltage transformer. Make sure also the tuning capacitor value did not out.

Jestine

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]]> By: manju https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-34955 Thu, 03 Nov 2011 04:01:39 +0000 https://www.jestineyong.com/?p=1458#comment-34955 Hi sir manjunath here from Karnataka belgaum dist Dell E172FPb LCD Monitor (Benq OEM) c5707 transistors I change the this transistors but same problem continues power batten led blinking whats a problem tell me sir

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]]> By: soorajkp https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-8179 Thu, 30 Dec 2010 02:28:11 +0000 https://www.jestineyong.com/?p=1458#comment-8179 from ur site i come to know the substitute for ap2761ia and let me find the mosfet and i get back to u after replace ment.
thanking you

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]]> By: admin https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-7449 Sat, 30 Oct 2010 20:19:31 +0000 https://www.jestineyong.com/?p=1458#comment-7449 HI Mushfiqur,

The ccfl not working was due to that mainboard did not send an On signal to the inverter IC. If the VGA cable is connected and the POWER LED light turned from green to yellow then this mean the Micro controller (MCU) programs may have corrupted. It is the mainboard problem since the MCU is located in the mainboard.

Jestine

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]]> By: Mushfiqur Rahman https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-7442 Sat, 30 Oct 2010 04:25:57 +0000 https://www.jestineyong.com/?p=1458#comment-7442 Hi Jestine,

Thanks for your cordial response. I have posted a problem about LCD monitor on a thread but since I am new here that's why I couldn't find that thread that's why asking again in this thread.

Sorry for my disturbance.

Last day I said that my ACER AL1916w monitor is showing the green LED indicator when I connect it with the AGP(or VGA)port and it's remains green(LED). If I remove the VGA cord from the VGA(or AGP) port after sometimes it's led become yellow. In both cases nothing shows in the display.

To solve the problem I removed the metal cover and test the power section. I found that the backlight CFL is not getting their voltage. Actually they are getting 0 volts.

I thought that may be the step-up transformer(FBT) which is dead and that's why it's happening. But after removing that from the circuit board I've checked it and it's ok. I have also checked the caps and they are ok and showing their respective voltage.

I am a student and that's why it's not possible for me to go a repairer cause of heavy charge. I would be grateful if you help me.

Thanks.

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]]> By: admin https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-7438 Fri, 29 Oct 2010 20:18:53 +0000 https://www.jestineyong.com/?p=1458#comment-7438 HI Sheila,

May in know where was the power fet located and in what kind of equipment? It could be a 2amp 600 volt n -channel FET.

jestine

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]]> By: Sheila https://jestineyong.com/electronic-repair-questionsanswers-and-testimonials-4/comment-page-1/#comment-7436 Fri, 29 Oct 2010 19:00:29 +0000 https://www.jestineyong.com/?p=1458#comment-7436 Hi! First of all, i found your site very helpful to many electronic enthusiasts. Thank you for starting this.

I was searching for a possible replacement or equivalent of PFF2N60 but can't find anything in the net or in ECG. Do you have idea what can be used to replace this part?

Thanks!

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