Comments on: Electronic Repair Questions/Answers & Testimonials- Part 28

By: Tapanhaz

Tapanhaz — Fri, 07 Feb 2014 20:21:24 +0000

IC cross reference PWM.....
http://www.datasheetarchive.com/dl/Datasheet-040/DSA00105795.pdf

Likes(0)Dislikes(0)

By: Imran

Imran — Wed, 19 Jun 2013 09:13:57 +0000

HI Jestine,
I was searching for SMPS repair book and was crazy about it. Now i have found it. I will educate my students free of cost on it. Thanks

Likes(0)Dislikes(0)

By: Jestine Yong

Jestine Yong — Fri, 24 Aug 2012 13:54:55 +0000

In reply to feji.

Hi feji,

After one minute is the output voltages from the power supply good and stable or fluctuate?

Jestine

Likes(0)Dislikes(0)

By: feji

feji — Fri, 24 Aug 2012 01:44:21 +0000

i have a problem with my TCL model number 2027U the problem is after 1min the power has on off
please advice...

thanks.

Likes(0)Dislikes(0)

By: Jestine Yong

Jestine Yong — Wed, 11 Jul 2012 12:48:13 +0000

In reply to Marvin.

Hi Marvin,

Actually the spec of the 1N5406 is lower than 1N5408. When you say TV turn off, you mean the power output totally off (zero output voltages) or the display off and the power led still lights up?

Jestine

Likes(0)Dislikes(0)

By: Marvin

Marvin — Wed, 11 Jul 2012 08:17:22 +0000

I wondering if it would be posible to replace a in5406 diode with a in5408 diode.I have already done this, but the tv still turns off after 5 minuets.The forums say bad diodes's or bad caps.Replacing all bad caps,which i found quite afew,leaves me with this 1 shorted diode.Will a in5408 work as a in5406?

Thanks:Marvin

Likes(0)Dislikes(0)

By: admin

admin — Tue, 03 May 2011 23:48:03 +0000

HI NDJOGA,

Sorry i do not keep those manual. I suggest that you search from this link:

https://www.jestineyong.com/?cat=59

Jestine

Likes(0)Dislikes(0)

By: N'djoga Fabrice

N'djoga Fabrice — Tue, 03 May 2011 23:35:14 +0000

hello everyone in this web site.
I have a problem to find the manual repair of HP 1702 in Internet.
If you would help me it's be a pleasure for me.
long to alls and best things.
better day.

Likes(0)Dislikes(0)

By: admin

admin — Thu, 10 Mar 2011 21:37:01 +0000

HI Catlin,

Youtube have some video on how to solder. If there is no solder crack on the transformer pins and not loosen then it should be okay. The tv shutdown sometimes can be one of the backlight have problem.

Jestine

Likes(0)Dislikes(0)

By: Catlin Stults

Catlin Stults — Thu, 10 Mar 2011 11:42:10 +0000

Hello,

I have a westing house tv that has a problem with shuting down on its own. I read in one of your previous posts that someone had the same problem and they changed an inverter transformer. I actually don't know how to solder so i had someone else solder a new inverter transformer on to the power suply board. I wanted to know how i could test their soldering job because i am still having the same problem. I tested continuity in the places that looked like they should be reading continuity. I am a resedential electrician so i kind of knew what to look for but need some assistance.

Thanks,
Catlin

Likes(0)Dislikes(0)